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Pal, Nabendu, and Wooi K. Lim. "On intra-class correlation coefficient estimation." Statistical Papers 45, no. 3 (2004): 369–92. http://dx.doi.org/10.1007/bf02777578.
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Caceres, Alejandro, Deanna L. Hall, Fernando O. Zelaya, Steven C. R. Williams, and Mitul A. Mehta. "Measuring fMRI reliability with the intra-class correlation coefficient." NeuroImage 45, no. 3 (2009): 758–68. http://dx.doi.org/10.1016/j.neuroimage.2008.12.035.
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Flavell, Carol A., Laurence G. Marshman, and Susan J. Gordon. "Measurement of transversus abdominis activation in chronic low back pain patients using a novel standardized real-time ultrasound imaging method." Ultrasound 27, no. 1 (2018): 31–37. http://dx.doi.org/10.1177/1742271x18785403.
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Real-time ultrasound imaging (US) to measure abdominal muscle dimensions has aided low back pain rehabilitation and research. Notwithstanding, ultrasound imaging measurement of transversus abdominis muscle activation in chronic low back pain populations has been characterized by variable and generally suboptimal intra-observer reliability. Methodological deficiencies of ‘freehand’ ultrasound imaging are uncontrolled probe–skin pressure, inclination and roll of the probe. Despite previous attempts to standardize these parameters, intra-observer reliability in chronic low back pain was poor to moderate (0.32–0.62). Therefore, a standardized method that controls and records probe force, inclination and roll during ultrasound imaging may optimize measurement reliability in chronic low back pain. This pilot study investigated utility, standardization and intra-observer reliability of ultrasound imaging transversus abdominis thickness measurement in chronic low back pain patients (n = 17). Transversus abdominis imaging over two separate measurement sessions was conducted using a novel method to standardize probe parameters. Resting and contracted transversus abdominis thickness, and transversus abdominis activation measurements were obtained from duplicate paired images (n = 68). Intra-class correlation coefficients were reported with 95% confidence intervals. Transversus abdominis thickness at rest (intra-class correlation coefficient = 0.97 confidence interval: 0.93, 0.99), when contracted (intra-class correlation coefficient = 0.99 confidence interval: 0.97, 0.99) and transversus abdominis activation (intra-class correlation coefficient = 0.93 confidence interval: 0.81, 0.97) measurements were highly reliable. Ultrasound imaging of transversus abdominis using the novel standardized ultrasound imaging method produced highly reliable intra-observer transversus abdominis measurements, superior to ‘freehand’ ultrasound imaging, despite the physical limitations typically associated with a chronic low back pain population. Unique standardizing ranges for ‘probe force device’ probe parameters were obtained. This novel standardized ultrasound imaging method may optimize transversus abdominis activation assessment in chronic low back pain and other populations, aiding future research.
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Matthew, Jacqueline, Christina Malamateniou, Caroline L. Knight, et al. "A comparison of ultrasound with magnetic resonance imaging in the assessment of fetal biometry and weight in the second trimester of pregnancy: An observer agreement and variability study." Ultrasound 26, no. 4 (2018): 229–44. http://dx.doi.org/10.1177/1742271x17753738.
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Objective To compare the intra and interobserver variability of ultrasound and magnetic resonance imaging in the assessment of common fetal biometry and estimated fetal weight in the second trimester. Methods Retrospective measurements on preselected image planes were performed independently by two pairs of observers for contemporaneous ultrasound and magnetic resonance imaging studies of the same fetus. Four common fetal measurements (biparietal diameter, head circumference, abdominal circumference and femur length) and an estimated fetal weight were analysed for 44 ‘low risk’ cases. Comparisons included, intra-class correlation coefficients, systematic error in the mean differences and the random error. Results The ultrasound inter- and intraobserver agreements for ultrasound were good, except intraobserver abdominal circumference (intra-class correlation coefficient = 0.880, poor), significant increases in error was seen with larger abdominal circumference sizes. Magnetic resonance imaging produced good/excellent intraobserver agreement with higher intra-class correlation coefficients than ultrasound. Good interobserver agreement was found for both modalities except for the biparietal diameter (magnetic resonance imaging intra-class correlation coefficient = 0.942, moderate). Systematic errors between modalities were seen for the biparietal diameter, femur length and estimated fetal weight (mean percentage error = +2.5%, −5.4% and −8.7%, respectively, p < 0.05). Random error was above 5% for ultrasound intraobserver abdominal circumference, femur length and estimated fetal weight and magnetic resonance imaging interobserver biparietal diameter, abdominal circumference, femur length and estimated fetal weight (magnetic resonance imaging estimated fetal weight error >10%). Conclusion Ultrasound remains the modality of choice when estimating fetal weight, however with increasing application of fetal magnetic resonance imaging a method of assessing fetal weight is desirable. Both methods are subject to random error and operator dependence. Assessment of calliper placement variations may be an objective method detecting larger than expected errors in fetal measurements.
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Kotwani, Seema, D. N. Bid, Dinesh Ghatamaneni, Khalid A. Alahmari, Thangamani Ramalingam, and S. Paul Silvian. "Determining the reliability of craniocervical flexion test in asymptomatic individuals." Hong Kong Physiotherapy Journal 38, no. 01 (2018): 33–40. http://dx.doi.org/10.1142/s101370251850004x.
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Background: The inter-rater reliability of the craniocervical flexion test (CCFT) has not been established. Objective: To investigate the intra-rater and inter-rater reliabilities of the CCFT in asymptomatic subjects. Methods: Sixty asymptomatic subjects were randomly selected for the study. The CCFT was measured on each subject by two testers for inter-rater reliability and by one of the testers after a gap of seven days for the intra-rater reliability. Before testing, the participants were trained for the movement and compensations were corrected. Results: The CCFT has high inter-rater reliability (intra-class correlation coefficient [Formula: see text] 0.907, standard error of mean [Formula: see text] 0.735) and high intra-rater reliability (intra-class correlation coefficient [Formula: see text] 0.986, standard error of mean [Formula: see text] 0.287). A Bland & Altman limits of agreement analysis has confirmed the high inter- and intra-rater reliabilities of the test. Conclusion: The CCFT has high inter-rater and intra-rater reliabilities in asymptomatic subjects.
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Suzuki, T., Y. Sato, S. Sotome, H. Arai, A. Arai, and H. Yoshida. "Intra- and inter-tester reliability and validity of normal finger size measurement using the Japanese ring gauge system." Journal of Hand Surgery (European Volume) 42, no. 5 (2016): 511–15. http://dx.doi.org/10.1177/1753193416680562.
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This study was designed to investigate the reliability and validity of measurements of finger diameters with a ring gauge. A reliability study enrolled two independent samples (50 participants and seven examiners in Study I; 26 participants and 26 examiners in Study II). The sizes of each participant’s little fingers were measured twice with a ring gauge by each examiner. To investigate the validity of the measurements, five hand therapists compared the finger size and hand volume of 30 participants with the ring gauge and with a figure-of-eight technique (Study III). The intra-class correlation coefficient for intra-observer reliability ranged from 0.97 to 0.99 in Study I, and 0.90 to 0.97 in Study II. The intra-class correlation coefficient for inter-observer reliability was 0.95 in Study I and 0.94 in Study II. The validity study showed a Pearson product moment correlation coefficient of 0.75. The ring gauge showed high reliability and validity for measurement of finger size. Level of evidence: III, diagnostic
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Lee, Gyu-wan, Chung-hwi Yi, Gyoung-mo Kim, Young-jung Lee, and Jang-whon Yoon. "Cross-cultural adaptation and clinical evaluation of a Korean version of the Work, Osteoarthritis or joint-Replacement Questionnaire." International Journal of Therapy and Rehabilitation 26, no. 5 (2019): 1–8. http://dx.doi.org/10.12968/ijtr.2018.0120.
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Background and aim The Work Osteoarthritis or joint-Replacement Questionnaire (WORQ) is a new assessment tool developed in the Netherlands. It needs translation and cross-cultural adaptation for use in each country. The aim of this study was to translate the Work Osteoarthritis or joint-Replacement Questionnaire into Korean and to verify its reliability and validity. Methods To evaluate the clinimetric quality of the Korean-WORQ, we performed tests for internal consistency (Cronbach's alpha), reliability (intra-class correlation coefficients) and concurrent validity (Spearman's correlation coefficient). Factor analysis was carried out to identify the principal components of the questionnaire. Findings Both the internal consistency and intra-class correlation coefficients showed the reliability of the Korean-WORQ to be excellent. The Korean-WORQ had a strong positive correlation with the Western Ontario and McMaster Universities Osteoarthritis Index and three components were extracted in factor analysis. Conclusions Based on these results, the Korean-WORQ seems to be a suitable questionnaire for assessing the disability levels of patients with knee injuries.
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de Araujo Barbosa, Paulo Henrique Ferreira, Lidiane Teles de Menezes, Abraão Souza Costa, Clarissa Cardoso Santos Couto Paz, Henrique Resende Martins, and Emerson Fachin-Martins. "Reliability of upright weight-bearing distribution measures obtained by computed baropodometry for participants with and without post-stroke hemiparesis." International Journal of Therapy and Rehabilitation 26, no. 11 (2019): 1–12. http://dx.doi.org/10.12968/ijtr.2018.0026.
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Background/Aims Measurements from force platforms and digital scales have been applied to classify weight-bearing distribution in post-stroke hemiparesis. However, an intermediate tool – computed baropodometry – is breaking new ground in this field of diagnosis, with a need to report its reliability. Intra-test and test/retest reliabilities of the percentage of total body weight borne by the predominantly used hemibody calculated from computed baropodometry in participants with and without chronic hemiparesis was investigated in this study. Methods A total of 40 participants were evaluated and combined for age and sex in two different groups. Repeated measures were taken to analyse differences among records obtained from averages during 5, 10 or 20 seconds (intra-test reliability) and between the test and 1-week retest (test/retest reliability) for both groups. The analysis of variance, intra-class correlation coefficient and data plotted by Bland-Altman method were administrated. Results The intra-test analysis did not show differences among records obtained from different time durations (5, 10 and 20 seconds). Excellent to moderate intra-class correlation coefficient values (0.794 to 0.644) between test and retest were observed in the hemiparesis group from the records obtained by short to the longer lasting time durations, while for control groups, intra-class correlation coefficient values (0.661 to 0.748) were classified as moderate. Conclusions Acceptable reliability was found for all participants. Moreover, improved repeatability was reported when the measures were obtained by shorter time periods for both groups.
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Dobbin, Kevin K., and Alexei C. Ionan. "Sample size methods for constructing confidence intervals for the intra-class correlation coefficient." Computational Statistics & Data Analysis 85 (May 2015): 67–83. http://dx.doi.org/10.1016/j.csda.2014.11.010.
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Varghese, Sharon Merin, Thangavelu Senthilvelkumar, Noble Koshy, Gokilam Devaraj, Grace Rebekah, and Bobeena Rachel Chandy. "Reliability of the Clinical Outcome Variables Scale for children with cerebral palsy." International Journal of Therapy and Rehabilitation 28, no. 9 (2021): 1–8. http://dx.doi.org/10.12968/ijtr.2019.0062.
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Background/aims It can be difficult for rehabilitation professionals to use lengthy scales and different outcome measures for diverse clinical conditions in busy outpatient settings. The Clinical Outcome Variables Scale is a functional mobility measure that is applied to various neurological conditions. Determining the inter- and intra-rater reliability of clinical outcome variable scale for children with cerebral palsy will further enhance its utility. Methods A total of 30 children aged between 3 and 16 years with cerebral palsy, who could obey single-step commands, were recruited for the study. Two independent assessors scored the children using the Clinical Outcome Variable Scale to determine inter-rater reliability. A repeat assessment was done by the principal assessor after 24 hours to establish intra-rater reliability. Reliability was estimated using intra-class correlation coefficient values. Results The Clinical Outcome Variables Scale had high Inter- and intra-rater reliability for the composite score (intraclass correlation coefficient=1), the general mobility subscale (intraclass correlation coefficient=0.99), and the ambulation subscale (intraclass correlation coefficient=0.99). The intraclass correlation coefficient for the individual test items were also showed a high correlation, with the variance between the tests and physiotherapists ranging from 0.95 to 1. Conclusions The Clinical Outcome Variables Scale demonstrated high inter- and intra-rater reliability when assessing functional mobility in children with cerebral palsy. Further studies should establish criterion validity and minimally clinically important difference values to maximise the use of the scale.
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Mullin, Rebecca Louise, Rebecca Smith, Susan Wood, Angela Swampillai, and Shazia Afridi. "Reliability of functional outcome measures in adults with neurofibromatosis 2." SAGE Open Medicine 10 (January 2022): 205031212211189. http://dx.doi.org/10.1177/20503121221118996.
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Objective: To determine inter- and intra-rater reliability of functional performance outcome measures in people with neurofibromatosis 2. To ascertain how closely objective and subjective measures align. Methods: Twenty-nine people with neurofibromatosis 2 were recorded performing the modified clinical test of sensory integration and balance, four square step test and modified nine-hole peg tests. Three raters scored each measure to determine inter-rater reliability. One rater scored the measures a second time to determine intra-rater reliability. Participants also completed a disease-specific quality of life questionnaire and dynamic visual acuity testing. Results: Inter-rater and intra-rater reliability scores (intra-class correlation coefficient) were excellent for all tests (intra-class correlation coefficient r ⩾ 0.9). The four square step test correlated with perceived walking challenges and modified clinical test of sensory integration and balance correlated with perceived balance challenges in a neurofibromatosis 2 quality of life patient report outcome measure. Conclusion: The modified clinical test of sensory integration and balance, four square step test and modified nine-hole peg tests are potentially useful measures for monitoring neurofibromatosis 2.
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Qin, Yujie, Hongyang Deng, Mengnan Lu, et al. "Reproducibility and Validity of a Semi-Quantitative Food Frequency Questionnaire for Children Aged 6–12 in Western China." Nutrients 15, no. 4 (2023): 856. http://dx.doi.org/10.3390/nu15040856.
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The Food Frequency Questionnaire (FFQ) is often used to assess dietary intake in large-scale epidemiological studies. This study aimed to evaluate the reproducibility and validity of the FFQ newly developed for children aged 6 to 12 in western China. A total of 133 children were included in the analysis, and all the children and their caregivers completed the FFQs twice with a three-month interval period, and three 24 h recalls were carried out one month after the first FFQ. We assessed the relative validity and reproducibility using various methods, such as the Spearman correlation coefficient, intra-class correlation coefficient, weighed Kappa, quartile agreement, and Bland–Altman analysis. The Spearman correlation coefficients for food ranged from 0.30 to 0.84, and for nutrients from 0.46 to 0.82 regarding reproducibility. The food intra-class correlation coefficients ranged from 0.20 to 0.85, while nutrients’ ranged from 0.37 to 0.75. In terms of relative validity, the average Spearman correlation coefficients for food were 0.20, and 0.30 for energy and nutrients. The energy-adjusted and de-attenuation coefficients were calculated. Moreover, the average percentage of participants misclassified into the extreme quartile for food and nutrients was 8.0% and 7.0%, respectively. Weighted Kappa values indicated acceptable agreement between the FFQs and 24 h recalls. Furthermore, the percentage of results in the limits of agreement (LOA) were all above 93.0%. In conclusion, The FFQ showed good reproducibility and acceptable relative validity for assessing the dietary intake of children aged 6–12 in western China.
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Yadav, Manoj K., and Girdhar G. Agarwal. "On Estimation of Standard Error of Intra-Class Correlation Coefficient in Unbalanced Nested Designs." Communications in Statistics - Theory and Methods 42, no. 1 (2013): 88–97. http://dx.doi.org/10.1080/03610926.2011.575513.
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Specht, Karsten, N. Jon Shah, Karl Zilles, and Lutz Jäncke. "Measurement of reliability in functional MRI using intra-class-correlation coefficient and scatter-plots." NeuroImage 11, no. 5 (2000): S640. http://dx.doi.org/10.1016/s1053-8119(00)91570-2.
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Yue, Chen, Shaojie Chen, Haris I. Sair, Raag Airan, and Brian S. Caffo. "Estimating a graphical intra-class correlation coefficient (GICC) using multivariate probit-linear mixed models." Computational Statistics & Data Analysis 89 (September 2015): 126–33. http://dx.doi.org/10.1016/j.csda.2015.02.012.
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Guo, Senmiao, and Qigang Jiang. "Improving Rock Classification with 1D Discrete Wavelet Transform Based on Laboratory Reflectance Spectra and Gaofen-5 Hyperspectral Data." Remote Sensing 15, no. 22 (2023): 5334. http://dx.doi.org/10.3390/rs15225334.
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The high intra-class variability of rock spectra is an important factor affecting classification accuracy. The discrete wavelet transform (DWT) can capture abrupt changes in the signal and obtain subtle differences between the spectra of different rocks. Taking laboratory spectra and hyperspectral data as examples, high-frequency features after DWT were used to improve the discrimination accuracy of rocks. Various decomposition levels, mother wavelet functions, and reconstruction methods were used to compare the accuracy. The intra-class variability was measured using the intra-class Spectral Angle Mapper (SAM). Our results show that the high-frequency features could improve the discrimination accuracy of laboratory spectra by 13.4% (from 46.5% to 59.9%), compared to the original spectral features. The accuracy of image spectra in two study areas increased by 8.6% (from 68.3% to 76.9%) and 7.2% (from 81.3% to 88.5%), respectively. Haar wavelets highlighted the spectral differences between different rocks. After DWT, intra-class SAM reduced and intra-class variability of rocks decreased. The Pearson correlation coefficient indicated a negative correlation between intra-class variability and overall accuracy. It suggested that improving classification accuracy by reducing intra-class variability was feasible. Though the result of lithological mapping still leaves room for improvement, this study provides a new approach to reduce intra-class variability, whether using laboratory spectra or hyperspectral data.
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Almeida, Isabella Da Silva, Larissa Pitanga Barreto, Letícia De Souza Andrade, Caio Victor Sousa, and Yomara Lima Mota. "Fidedignidade nas medidas derivadas do método de palpação de um software para avaliação postural: a experiência clínica importa?" Brazilian Journal of Kinanthropometry and Human Performance 20, no. 6 (2019): 515–24. http://dx.doi.org/10.5007/1980-0037.2018v20n6p515.
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The postural evaluation software (SAPO) has been used as a valuable tool for the analysis of postural alterations, however, such a tool depends on palpation performed by the evaluator. The aim of the present study was to evaluate the inter- and intra-examiner reliability of experienced and inexperienced examiners in measurements derived from the palpation method, and its possible influence on measurements obtained by SAPO. Nine evaluators participated in the study, which were divided into three groups according to experience with respect to palpation (GI: inexperienced group, GSE: semi-experienced group and GE: experienced group). Each evaluator performed the postural analysis of 10 volunteers, which were photographed in orthostatic position, following the SAPO recommendations. The intra-examiner reliability analysis indicated that all three groups had higher, good and moderate mean correlation values for each examiner than low correlations. In the inter-examiner reliability assessment, GE and GSE groups exhibited higher correlation values. The intra-class correlation coefficient, in the single-measure analysis, presented correlation coefficients <0.70 in 9 of the variables analyzed, indicating non-significant correlation. It was concluded that the measures analyzed by SAPO have high intra-examiner reliability. However, regarding inter-examiner reliability, the group composed of inexperienced evaluators presented lower values, suggesting that the experience time may have influenced the inter-examiner reliability regarding postural evaluation.
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IVORRA, EUGENIO, MARIO ORTEGA, and MARIANO ALCANIZ. "AZURE KINECT BODY TRACKING UNDER REVIEW FOR THE SPECIFIC CASE OF UPPER LIMB EXERCISES." MM Science Journal 2021, no. 2 (2021): 4333–41. http://dx.doi.org/10.17973/mmsj.2021_6_2021012.
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A tool for human pose estimation and quantification using consumer-level equipment is a long-pursued objective. Many studies have employed the Microsoft Kinect v2 depth camera but with recent release of the new Kinect Azure a revision is required. This work researches the specific case of estimating the range of motion in five upper limb exercises using four different pose estimation methods. These exercises were recorded with the Kinect Azure camera and assessed with the OptiTrack motion tracking system as baseline. The statistical analysis consisted of evaluation of intra-rater reliability with intra-class correlation, the Pearson correlation coefficient and Bland–Altman statistical procedure. The modified version of the OpenPose algorithm with the post-processing algorithm PoseFix had excellent reliability with most intra-class correlations being over 0.75. The Azure body tracking algorithm had intermediate results. The results obtained justify clinicians employing these methods, as quick and low-cost simple tools, to assess upper limb angles.
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Prieto, Alessandra V., Kênnea Martins Almeida Ayupe, Ana C. A. Abreu, and Paulo J. B. Gutierres Filho. "Development and Validation of an Instrument to Assess Horseback Mobility in Hippotherapy." Perceptual and Motor Skills 128, no. 5 (2021): 2117–31. http://dx.doi.org/10.1177/00315125211036578.
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Improvement in rider mobility represents an important functional gain for people with disabilities undergoing hippotherapy. However, there is no validated measuring instrument to track and document the rider's progress in riding activities. In this study, we aimed to develop and establish validity evidence for an instrument to assess hippotherapy participants’ mobility on horseback. We report on this development through the stages of: (a) content validation, (b) construct validation, (c) inter- and intra-rater reliability and (d) internal consistency analysis. We evaluated its factor structure with exploratory factor analyses, calculated values for inter- and intra-rater reliability using the intra-class correlation coefficient, and calculated its internal consistency using Cronbach's alpha. We followed recommendations by the Guidelines for Reporting Reliability and Agreement Studies. We found good inter-rater reliability (intra-class correlation coefficient – ICC = 0.991–0.999) and good intra-rater reliability (ICC = 0.997–1.0), and there was excellent internal consistency (Cronbach's α = 0.937–0.999). The instrument’s factor structure grouped its three domains into one factor. As this instrument is theoretically consistent and has been found to be appropriate and reliable for its intended use, it is now available for the measurement of horseback mobility among hippotherapy riders.
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O'Daly, O. G., A. Caceres, K. W. Nam, S. C. Williams, and M. A. Mehta. "Assessing the Reliability of the Default Mode Network (DMN) using the Intra-Class Correlation Coefficient." NeuroImage 47 (July 2009): S83. http://dx.doi.org/10.1016/s1053-8119(09)70603-2.
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Fisher, James, Thomas Clark, Katherine Newman-Judd, Josh Arnold, and James Steele. "Intra-Subject Variability of 5 Km Time Trial Performance Completed by Competitive Trained Runners." Journal of Human Kinetics 57, no. 1 (2017): 139–46. http://dx.doi.org/10.1515/hukin-2017-0055.
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AbstractTime-trials represent an ecologically valid approach to assessment of endurance performance. Such information is useful in the application of testing protocols and estimation of sample sizes required for research/magnitude based inference methods. The present study aimed to investigate the intra-subject variability of 5 km time-trial running performance in trained runners. Six competitive trained male runners (age = 33.8 ± 10.1 years; stature = 1.78 ± 0.01 m; body mass = 69.0 ± 10.4 kg, $\it V^{.}$ O2max = 62.6 ± 11.0 ml·kg·min-1) completed an incremental exercise test to volitional exhaustion followed by 5 x 5 km time-trials (including a familiarisation trial), individually spaced by 48 hours. The time taken to complete each trial, heart rate, rating of perceived exertion and speed were all assessed. Intra-subject absolute standard error of measurement and the coefficient of variance were calculated for time-trial variables in addition to the intra-class correlation coefficient for time taken to complete the time-trial. For the primary measure time, results showed a coefficient of variation score across all participants of 1.5 ± 0.59% with an intra-class correlation coefficient score of 0.990. Heart rate, rating of perceived exertion and speed data showed a variance range between 0.8 and 3.05%. It was concluded that when compared with related research, there was observed low intra-subject variability in trained runners over a 5 km distance. This supports the use of this protocol for 5 km time-trial performance for assessment of nutritional strategies, ergogenic aids or training interventions on endurance running performance.
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Sözeri Öztürk, Elif, and Tuğba Karataş. "Turkish Validity and Reliability of the Nursing Students' Rights Awareness Scale in Clinical Practice." Journal of Nursology 28, no. 1 (2025): 20–27. https://doi.org/10.17049/jnursology.1419257.
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Objective: To adapt the Nursing Students’ Rights Awareness Scale into Turkish and test its validity and reliability. Methods: This was a methodological study performed with 296 nursing students between 11 April and 10 June 2022 in the capital city of Turkey. Expert opinions were taken for the language and content validity of the scale. Exploratory and Confirmatory Factor Analyses were used to test construct validity. Cronbach's alpha coefficient was used for internal reliability. Test-retest was conducted using the Intra-Class Correlation and Spearman’s rank correlation. Results: The Content Validity Index was 0.87. The scale, which originally had three factors, was formed in a single-factor structure in the current study, and the factor loads ranged from 0.563 to 0.871. The variance explained for the single-factor structure consisting of 14 items was 63.7%. The Cronbach's alpha was 0.95. The Intra-Class Correlation value was 0.95 (95%CI= 0.938-0.956, P&lt;.001) and the Spearman's rank correlation coefficient was 0.70. Conclusion: The Turkish version of the Nursing Students’ Rights Awareness Scale is a valid and reliable instrument.
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Kim, Ki-Yeol. "Statistical methods for accessing agreement between repeated measurements in dental research." Journal of The Korean Dental Association 54, no. 11 (2016): 880–96. http://dx.doi.org/10.22974/jkda.2016.54.11.005.
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The comparison of the repeated measurements is often needed to see whether they agree sufficiently, when a measurement is repeated under identical conditions by different raters. Such investigations are often analyzed inappropriately, by using correlation coefficient. The purpose of this study is to introduce statistical methods for accessing the agreement of the repeated measurements, which include Bland-Altman plot, intra class correlation, Passing-Bablok regression and Cohen's kappa coefficient, and to show how to execute them using examples.
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Etherington, Jeremy, Grant Innes, James Christenson, et al. "Development, implementation and reliability assessment of an emergency physician performance evaluation tool." CJEM 2, no. 04 (2000): 237–45. http://dx.doi.org/10.1017/s1481803500007260.
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ABSTRACT Evaluation of physician practice is necessary, both to provide feedback for self-improvement and to guide department heads during yearly evaluations. Objective: To develop and implement a peer-based performance evaluation tool and to measure reliability and physician satisfaction. Methods: Each emergency physician in an urban emergency department evaluated their peers by completing a survey consisting of 21 questions on effectiveness in 4 categories: clinical practice, interaction with coworkers and the public, nonclinical departmental responsibilities, and academic activities. A sample of emergency nurses evaluated each emergency physician on a subset of 5 of the questions. Factor analysis was used to assess the reliability of the questions and categories. Intra-class correlation coefficients were calculated to determine inter-rater reliability. After receiving their peer evaluations, each physician rated the process’s usefulness to the individual and the department. Results: 225 surveys were completed on 16 physicians. Factor analysis did not distinguish the nonclinical and academic categories as distinct; therefore, the survey questions fell into 3 domains, rather than the 4 hypothesized. The overall intra-class correlation coefficient was 0.43 for emergency physicians, indicating moderate, but far from perfect, agreement. This suggests that variability exists between physician evaluators, and that multiple reviewers are probably required to provide a balanced physician evaluation. The intra-class correlation coefficient for emergency nurses was 0.11, suggesting poor reliability. Overall, 11 of 15 physicians reported the process valuable or mostly valuable, 3 of 15 were unsure and 1 of 15 reported that the process was definitely not valuable. Conclusion: Physician evaluation by a single individual is probably unreliable. A useful physician peer evaluation tool can be developed. Most physicians view a personalized, broad-based, confidential peer review as valuable.
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Cherkasov, M. A., A. S. Ibiev, A. V. Saraev, and N. N. Kornilov. "Russian Version of HSS Knee Replacement Expectations Survey: Language and Cultural Adaptation." Vestnik travmatologii i ortopedii imeni N.N. Priorova, no. 2 (June 30, 2017): 17–21. http://dx.doi.org/10.32414/0869-8678-2017-2-17-21.
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Purpose . To perform language and cultural adaptation of the Hospital of Special Surgery (HSS) Knee Replacement Expectations Survey and evaluate its reliability.Material and methods . To preserve the HSS validity its language and cultural adaptation was performed in several steps: (1) direct translation, (2) synthesis of the intermediate version, (3) back translation, (4) expert commission review and creation of the 2nd intermediate version, (5) pre-testing and formation of a final version, study of reliability with evaluation of Cronbach’s alpha and intra class correlation coefficient (ICC). Total number of 35 patients (mean age 54.2 years) with terminal-stage gonarthrosis who were admitted for total knee arthroplasty (TKA) participated in the study.Results . Cronbach’s alpha and intra class correlation coefficient (ICC) for the translated and adapted version of HSS Knee Replacement Expectations Survey made up 0.871 and 0.82 (95% confidence interval 0.725-0.897) that was indicative of high correlation between Russian version and the original.Conclusion . Russian version of HSS Knee Replacement Expectations Survey is a reliable tool and can be used for the evaluation of patient expectations prior to TKA.
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Cherkasov, M. A., A. S. Ibiev, A. V. Saraev, and N. N. Kornilov. "Russian Version of HSS Knee Replacement Expectations Survey: Language and Cultural Adaptation." N.N. Priorov Journal of Traumatology and Orthopedics 24, no. 2 (2017): 17–21. http://dx.doi.org/10.17816/vto201724217-21.
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Purpose . To perform language and cultural adaptation of the Hospital of Special Surgery (HSS) Knee Replacement Expectations Survey and evaluate its reliability. Material and methods . To preserve the HSS validity its language and cultural adaptation was performed in several steps: (1) direct translation, (2) synthesis of the intermediate version, (3) back translation, (4) expert commission review and creation of the 2nd intermediate version, (5) pre-testing and formation of a final version, study of reliability with evaluation of Cronbach’s alpha and intra class correlation coefficient (ICC). Total number of 35 patients (mean age 54.2 years) with terminal-stage gonarthrosis who were admitted for total knee arthroplasty (TKA) participated in the study. Results . Cronbach’s alpha and intra class correlation coefficient (ICC) for the translated and adapted version of HSS Knee Replacement Expectations Survey made up 0.871 and 0.82 (95% confidence interval 0.725-0.897) that was indicative of high correlation between Russian version and the original. Conclusion . Russian version of HSS Knee Replacement Expectations Survey is a reliable tool and can be used for the evaluation of patient expectations prior to TKA.
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Nakagawa, Shinichi, Paul C. D. Johnson, and Holger Schielzeth. "The coefficient of determination R 2 and intra-class correlation coefficient from generalized linear mixed-effects models revisited and expanded." Journal of The Royal Society Interface 14, no. 134 (2017): 20170213. http://dx.doi.org/10.1098/rsif.2017.0213.
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The coefficient of determination R 2 quantifies the proportion of variance explained by a statistical model and is an important summary statistic of biological interest. However, estimating R 2 for generalized linear mixed models (GLMMs) remains challenging. We have previously introduced a version of R 2 that we called for Poisson and binomial GLMMs, but not for other distributional families. Similarly, we earlier discussed how to estimate intra-class correlation coefficients (ICCs) using Poisson and binomial GLMMs. In this paper, we generalize our methods to all other non-Gaussian distributions, in particular to negative binomial and gamma distributions that are commonly used for modelling biological data. While expanding our approach, we highlight two useful concepts for biologists, Jensen's inequality and the delta method, both of which help us in understanding the properties of GLMMs. Jensen's inequality has important implications for biologically meaningful interpretation of GLMMs, whereas the delta method allows a general derivation of variance associated with non-Gaussian distributions. We also discuss some special considerations for binomial GLMMs with binary or proportion data. We illustrate the implementation of our extension by worked examples from the field of ecology and evolution in the R environment. However, our method can be used across disciplines and regardless of statistical environments.
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Hosseinabadi, Reza, Mahshid Foroughan, Gholam Reza Ghaed Amini Harouni, Razieh Zeidali Beiranvand, and Yadollah Pournia. "Psychometric Properties of the Persian Version of the 6-item De Jong Gierveld Loneliness Scale in Iranian Community-dwelling Older Persons." Salmand 15, no. 3 (2020): 338–49. http://dx.doi.org/10.32598/sija.15.3.2515.2.
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Objectives: Loneliness is a significant concern among the elderly and requires measurement and intervention. This study was conducted to translate and make a psychometric evaluation of the 6-item de Jong Gierveld loneliness scale in Iranian older people. Methods & Materials: This is a descriptive study carried out in 2018. After receiving permission from the tool designer, the original version of the 6-item de Jong Gierveld loneliness scale was translated into Persian by the translation and translation-back method. Then its face and content validities were determined. The final Persian version was completed by 224 eligible elderly residents in Khorramabad City, Iran. The data were analyzed using Confirmatory Factor Analysis (CFA), the Pearson correlation coefficient, the Intra-class Correlation Coefficient (ICC), and the Cronbach alpha. The SPSS and AMOS were used, and the significance was determined at the level of P≤ 0.05. Results: The Persian version of the 6-item de Jong Gierveld Loneliness Scale had an acceptable content validity (CVI=0.874). Confirmative factor analysis indicated the extraction of two factors: emotional loneliness and social loneliness (CMIN/DF=1.48, GFI=0.983, IFI=0.983, RMSEA=0.004). The overall loneliness score showed a significant correlation with the hospital anxiety and depression scale. The reliability of the scale was accepted by the intra-class correlation coefficient and the Cronbach alpha coefficient. Conclusion: The Persian version of the 6-item de Jong Gierveld loneliness scale is a reliable and valid measure of loneliness in Iranian elders.
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Kim, Na-Hyun, Byoung-Eun Yang, Sam-Hee Kang, et al. "Preclinical and Preliminary Evaluation of Perceived Image Quality of AI-Processed Low-Dose CBCT Analysis of a Single Tooth." Bioengineering 11, no. 6 (2024): 576. http://dx.doi.org/10.3390/bioengineering11060576.
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This study assessed AI-processed low-dose cone-beam computed tomography (CBCT) images for single-tooth diagnosis. Human-equivalent phantoms were used to evaluate CBCT image quality with a focus on the right mandibular first molar. Two CBCT machines were used for evaluation. The first CBCT machine was used for the experimental group, in which images were acquired using four protocols and enhanced with AI processing to improve quality. The other machine was used for the control group, where images were taken in one protocol without AI processing. The dose-area product (DAP) was measured for each protocol. Subjective clinical image quality was assessed twice by five dentists, with a 2-month interval in between, using 11 parameters and a six-point rating scale. Agreement and statistical significance were assessed with Fleiss’ kappa coefficient and intra-class correlation coefficient. The AI-processed protocols exhibited lower DAP/field of view values than non-processed protocols, while demonstrating subjective clinical evaluation results comparable to those of non-processed protocols. The Fleiss’ kappa coefficient value revealed statistical significance and substantial agreement. The intra-class correlation coefficient showed statistical significance and almost perfect agreement. These findings highlight the importance of minimizing radiation exposure while maintaining diagnostic quality as the usage of CBCT increases in single-tooth diagnosis.
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Çiğdem, Zerrin, Erhan Elmaoğlu, Serkan Usgu, and Selver Güler. "Adaptation and Validation of a Turkish Language Version of Braden QD Scale for Predicting Risk of Medical Device-Related Pressure Injuries in Pediatric Patients." Journal of Wound, Ostomy & Continence Nursing 52, no. 2 (2025): 147–52. https://doi.org/10.1097/won.0000000000001160.
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PURPOSE: This purpose of this study was to evaluate the validity and reliability of a Turkish language version of the Braden QD Scale for predicting medical device-related pressure injury (MDRPI) risk in pediatric patients. DESIGN: Validity and reliability study. SUBJECTS AND SETTING: The sample comprised 71 children in the pediatric intensive care units of a maternity and child hospital; Cengiz Gökçek Maternity and Children’s Hospital locates in Gaziantep, Turkey. METHODS: A Turkish language version of the Braden QD Scale was constructed, and its construct validity and content validity were measured. Several forms of reliability were measured, including internal consistency using Cronbach’s alpha coefficient, along with intra-class and interobserver reliability. The sensitivity and specificity of the scale were tested by analyzing a receiver operating characteristics curve. Data were collected from May 1 to May 20, May 2022. RESULTS: The Braden QD-T had lower (fair) content validity (Kendall’s W 0.217, P = .001) and adequate construct validity (Kaiser-Meyer-Olkin [KMO], 0.619; P = .000). It demonstrated excellent internal consistency (Cronbach’s alpha 0.878). The intra-class correlation coefficient varied from 0.979 and 1.000, indicating excellent intra-class reliability. The interobserver reliability coefficients varied from acceptable to excellent at 0.661 and 0.984. CONCLUSION: The Turkish version of the Braden QD Scale for predicting risk of MDRPI in pediatric population was determined to be a valid and reliable risk assessment tool for predicting risk for MDRPI.
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Hébert, Réjean, Gina Bravo, and Diane Girouard. "Fidélité de la traduction française de trois instruments d'évaluation des aidants naturels de malades déments." Canadian Journal on Aging / La Revue canadienne du vieillissement 12, no. 3 (1993): 324–37. http://dx.doi.org/10.1017/s0714980800013726.
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ABSTRACTCaregivers of demented patients are under significant stress along with physical, psychological or social problems. Standardized and validated instruments are required for measuring consequences of caregiving or efficacy of support interventions. Reliability of French translation of these instruments has to be verified in order to confirm their psychometric properties. The goal of the present study is to assess reliability of the French translation of three instruments designed for evaluation of caregivers of demented patients. The Zarit's Burden Interview (BI) is a 22-items scale measuring the subjective burden of the caregiver. The Revised Memory and Behavior Problems Checklist (RMBPC), a 53 item scale, measures frequency of memory and behaviour problems of demented patients and the caregiver's reaction to these problems, which is another mean of burden assessment. The Alzheimer's Disease Knowledge Test (ADKT) assesses knowledge of caregivers about demented diseases and resources available using 20 multiple choice questions. A reliability study was conducted on a sample of 40 caregivers. The caregivers were questioned twice, the second time after one (N = 26) or eight (N = 14) weeks. The BI internal consistency (Cronbach alpha) yielded a coefficient of 0.85 and test-retest reliability (intra-class correlation coefficient) was 0.89. The RMBPC's Cronbach Alpha was 0.93 for frequency and 0.94 for reaction. Intra-class correlation coefficients were 0.77 (frequency) and 0.90 (reaction) for RMBPC and 0.71 for ADKT.
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Marini, Lorenzo, Philipp Sahrmann, Mariana Andrea Rojas, et al. "Early Wound Healing Score (EHS): An Intra- and Inter-Examiner Reliability Study." Dentistry Journal 7, no. 3 (2019): 86. http://dx.doi.org/10.3390/dj7030086.
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The early wound healing score (EHS) was introduced to assess early wound healing of periodontal soft tissues after surgical incision. The purpose of this study is to evaluate the intra- and inter-examiner reliability of the EHS. Six examiners with different levels of training and clinical focus were enrolled. Each examiner was trained on the use of the EHS before starting the study. Thereafter, 63 photographs of three different types of surgical incisions taken at day 1, 3 or 7 post-operatively were independently evaluated according to the proposed assessment method. A two-way random intra-class correlation coefficient (ICC) and 95% confidence interval (CI) were used to analyze the intra- and inter-examiner reliability for the EHS. The inter-examiner reliability for the EHS was 0.828 (95% CI: 0.767–0.881). The intra-examiner reliability ranged between 0.826 (95% CI: 0.728–0.891) and 0.915 (95% CI: 0.856–0.950). The results therefore show an “almost perfect agreement” for intra- and inter-examiner reliability. The EHS provides a system for reproducible repeated ratings for the early healing assessment of incisions of periodontal soft tissues. Even when used by examiners with different clinical experience and specialty, it shows a high correlation coefficient.
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Baan, F., R. Bruggink, J. Nijsink, T. J. J. Maal, and E. M. Ongkosuwito. "Fusion of intra-oral scans in cone-beam computed tomography scans." Clinical Oral Investigations 25, no. 1 (2020): 77–85. http://dx.doi.org/10.1007/s00784-020-03336-y.
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Abstract Purpose The purpose of this study was to evaluate the clinical accuracy of the fusion of intra-oral scans in cone-beam computed tomography (CBCT) scans using two commercially available software packages. Materials and methods Ten dry human skulls were subjected to structured light scanning, CBCT scanning, and intra-oral scanning. Two commercially available software packages were used to perform fusion of the intra-oral scans in the CBCT scan to create an accurate virtual head model: IPS CaseDesigner® and OrthoAnalyzer™. The structured light scanner was used as a gold standard and was superimposed on the virtual head models, created by IPS CaseDesigner® and OrthoAnalyzer™, using an Iterative Closest Point algorithm. Differences between the positions of the intra-oral scans obtained with the software packages were recorded and expressed in six degrees of freedom as well as the inter- and intra-observer intra-class correlation coefficient. Results The tested software packages, IPS CaseDesigner® and OrthoAnalyzer™, showed a high level of accuracy compared to the gold standard. The accuracy was calculated for all six degrees of freedom. It was noticeable that the accuracy in the cranial/caudal direction was the lowest for IPS CaseDesigner® and OrthoAnalyzer™ in both the maxilla and mandible. The inter- and intra-observer intra-class correlation coefficient showed a high level of agreement between the observers. Clinical relevance IPS CaseDesigner® and OrthoAnalyzer™ are reliable software packages providing an accurate fusion of the intra-oral scan in the CBCT. Both software packages can be used as an accurate fusion tool of the intra-oral scan in the CBCT which provides an accurate basis for 3D virtual planning.
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Sannan, Nagham, Tatiana Papazian, Zeina Issa, and Nour El Helou. "Validity and reproducibility of a food frequency questionnaire to determine dietary intakes among Lebanese athletes." PLOS ONE 19, no. 10 (2024): e0311617. http://dx.doi.org/10.1371/journal.pone.0311617.
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Background and objective Nutrition is a basic need for athletes; thus, adequate dietary intake is crucial for maintaining overall health, facilitating training adaptations and boosting athletic performance. Accurate dietary assessment tools are required to minimize the challenges faced by athletes. This study verifies the validity and reproducibility of a 157 item semi-quantitative food frequency questionnaire (FFQ) among Lebanese athletes. This is the only Arabic questionnaire in Lebanon that estimates food consumption for athletes which can also be used in Arabic speaking countries. There has been no previous validated food frequency questionnaire that estimated food consumption for athletes in Lebanon. Methods A total of 194 athletes were included in the study to assess the validity of the food frequency questionnaire against four days dietary recalls by comparing the total nutrient intake values from the food frequency questionnaire with the mean values of four 24-hour dietary recalls using Spearman correlation coefficient and Bland Altman plots. In order to measure the reproducibility, the intra class correlation coefficients were calculated by repeating the same food frequency questionnaire after one month. Results The intra-class correlation coefficient between the two-food frequency questionnaires ranged from average (0.739 for carbohydrates) to good (0.870 for energy (Kcal)), to excellent (0.919 for proteins) concerning macronutrients and ranged from average (0.688 for vitamin D), to excellent (0.952 for vitamin B12), indicating an acceptable reproducibility. Spearman’s correlation coefficients of dietary intake estimate from the food frequency questionnaire and the four dietary recalls varied between 0.304 for sodium, 0.469 for magnesium to 0.953 for caloric intake (kcal). Bland-Altman plots illustrated a percentage of agreement ranging between 94.3% for fats to 96.4% for proteins. Conclusion This food frequency questionnaire has a reliable validity and reproducibility to evaluate dietary assessments and is an appropriate tool for future interventions to ensure the adoption of adequate eating strategies by athletes.
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Shehu, A., Kadafur, M. I., and Goni, I. C. "VALIDITY OF SELF-REPORT TO MEASURE FARM SIZE: EVIDENCE FROM NORTHERN GUINEA SAVANNAH OF BORNO STATE, NIGERIA." Journal of Agripreneurship and Sustainable Development 3, no. 4 (2020): 91–98. http://dx.doi.org/10.59331/jasd.v3i4.163.
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The study was explored to examine the validity of self-report to measure farm size: Evidence from Northern Guinea Savannah of Borno State, Nigeria. Multi-stage sampling procedure was used to select 667 respondents. The data were collected using Universal Transverse Mercator (UTM-area) direct measure and interview of a household head. Data were analysed using both descriptive statistics (count, percentage and mean) and inferential statistics (multiple regression and intra-class correlation). The results found the F-value of 2.7778 significant at P≤0.001implying that the model was reliable; and the deterministic coefficient was found to be 3.3% meaning that socio-economic characteristics were not the major determinants of self-reported farm size precision because 96.7% variations were accounted by other variables. The regression coefficient was 0.0128 signifying that if years of education increased by 1 year, the precision in self-reporting farm size will increase by 0.0128%. The intra-class correlation using two-way mixed effects model (where; people effects are random and measures effects are fixed) connotes that there is no agreement between two methods of measurement as depicted by average measure of intra-class correlation of 0.066. It was then concluded that farmers’ self-reported farm size was not valid and the only socio-economic factor that is affecting it was education. The study therefore, recommended that the use of any available application for measuring farm size during surveys like UTM-area measure which available at play store and compatible with Androids phone should be used.
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Wałecka, Joanna, Przemysław Lubiatowski, Ewa Bręborowicz, Piotr Kaczmarek, Monika Grygorowicz, and Leszek Romanowski. "Isometric Shoulder Testing Using a Forcemeter Is a Reliable Method of Strength Evaluation." Sensors 23, no. 22 (2023): 9106. http://dx.doi.org/10.3390/s23229106.
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Isometric strength testing using a digital dynamometer is reliable for muscle function evaluation. It allows us to objectify manual strength assessment measurement. We tested intra- and inter-observer reliability of a user-friendly efficient digital dynamometer—the Forcemeter—equipped with a computer program to monitor the measurements and to store the data. Abduction, forward flexion, and external and internal rotation of both shoulders were tested three times in 20 healthy volunteers with no record of shoulder trauma. Isometric contracture was recorded in newtons. The first and the third test were carried out by Examiner A (intra-rater reliability); the second test, by Examiner B (inter-rater reliability). Good reliability was shown for intra-class correlation coefficient (ICC) values which mean moderate to high correlations (r = 0.66–0.93) for both examiners. Moderate to high correlations (r = 0.72–0.91) were found for comparisons between the results obtained by Examiner A.
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Syauqy, Ahmad, Diana Nur Afifah, Rachma Purwanti, Choirun Nissa, Deny Yudi Fitranti, and Jane C. J. Chao. "Reproducibility and Validity of a Food Frequency Questionnaire (FFQ) Developed for Middle-Aged and Older Adults in Semarang, Indonesia." Nutrients 13, no. 11 (2021): 4163. http://dx.doi.org/10.3390/nu13114163.
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We assessed the reproducibility and validity of a food frequency questionnaire (FFQ) among middle-aged and older adults in Semarang, Indonesia. A total of 259 subjects aged 40–80 years completed two FFQs (nine-month apart) and nine 24 h dietary recalls (24HDRs, as a reference method). The reproducibility of the FFQ was analyzed using correlation coefficient, intra-class correlation coefficient (ICC), weighted kappa statistics and misclassification analysis. The validity was estimated by comparing the data acquired from FFQ1 and 24HDRs. The crude Pearson’s correlation coefficients and ICC for total energy and nutrients between FFQ1 and FFQ2 ranged from 0.50 to 0.81 and 0.44 to 0.78, respectively. Energy adjustment decreased the correlation coefficients for most nutrients. The crude, energy-adjusted and de-attenuated correlation coefficients for FFQ1 and 24HDRs ranged from 0.41 to 0.70, 0.31 to 0.89 and 0.54 to 0.82, respectively. The agreement rates for the same or adjacent quartile classifications were 81.1–94.6% for two FFQs and 80.7–89.6% for FFQ1 and 24HDRs. The weighted kappa values were 0.21 to 0.42 for two FFQs and 0.20 to 0.34 for FFQ1 and 24HDRs. A positive mean difference was found in the Bland–Altman analyses for energy and macronutrients. The FFQ could be acceptable for nutritional epidemiology study among Indonesians.
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Moradi, Fatemeh, Farhad Azadi, and Mohsen Vahedi. "Cross-culturally Adaptation, Validity, and Reliability of the Persian Version of the Constipation-related Disability Scale." Function and Disability Journal 7, no. 1 (2024): 0. http://dx.doi.org/10.32598/fdj.7.259.1.
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Background and Objectives: Chronic functional constipation is a common condition that declines the quality of life (QoL). The constipation-related disability scale (CRDS) precisely measures the disability caused by constipation and its effect on daily activities. In this study, we translated the CRDS into Persian and evaluated its reliability and validity. Methods: We used the international QoL assessment procedure to translate the CRDS into Persian. The translation was then given to 145 patients (59 men and 86 women) with chronic functional constipation. Also, 130 healthy individuals completed the questionnaire to assess its discriminant validity. The Cronbach α was calculated to assess the internal consistency, and the intra-class correlation coefficient showed the tool’s reproducibility. In addition, five gastroenterologists or internists reviewed the translated version to evaluate its acceptance and content validity. The content validity ratio and content value index were calculated in this regard. Finally, the Pearson correlation test assessed the tool’s convergent validity by correlating the CRDS with the 36-item short-form survey (SF-36). Results: The Cronbach α coefficient for total scores was found to be 0.86, indicating high internal consistency. The intra-class correlation coefficient was found to be 0.98 (95% CI, 0.96%, 0.99%), demonstrating excellent test re-test reliability. The total score of CRDS showed a strong negative correlation with the total scores of SF-36 (r=-0.89), showing its construct validity. All items of the Persian CRDS had a content validity index higher than 0.78 and a content validity ratio higher than 0.75, indicating good content validity. Furthermore, the independent t-test revealed a statistically significant difference (P < 0.05) between the healthy and diseased groups in questionnaire scores. This finding shows the tool’s ability to discriminate between healthy and sick groups. Conclusion: The Persian version of CRDS is suitable for evaluating constipation associated with disabilities in Persian-speaking individuals.
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Ramirez, A., L. Ekselius, and M. Ramklint. "Axis V – Global Assessment of Functioning Scale (GAF), further evaluation of the self-report version." European Psychiatry 23, no. 8 (2008): 575–79. http://dx.doi.org/10.1016/j.eurpsy.2008.05.001.
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AbstractObjectiveThe study aimed to examine agreement between patients' and professional staff members' ratings on the Global Assessment of Functioning scale (GAF).MethodsA total of 191 young adult psychiatric outpatients were included in a naturalistic, longitudinal study. Axis I and axis II disorders were assessed by means of the Structured Clinical Interview for DSM-IV. Before and after treatment, patients and trained staff members did a GAF rating. Agreement between GAF ratings was analyzed using the intra-class correlation coefficient (ICC).ResultsThe overall intra-class correlation coefficients before and after treatment were 0.65 and 0.86, respectively. Agreement in different axis I diagnostic groups varied, but was generally lower before treatment as compared to after treatment (0.50–0.66 and 0.78–0.90, respectively). Excessive psychiatric co-morbidity was associated with the lowest inter-rater reliability. Agreement, with respect to change in GAF scores during treatment, was good to excellent in all groups.ConclusionOverall, agreement between patients' and professionals' ratings on the GAF scale was good before and excellent after treatment. The results support the usefulness of the self-report GAF instrument for measuring outcome in psychiatric care. However, more research is needed about the difficulties in rating severely disordered patients.
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Tanenbaum, Aaron B., Abraham Z. Snyder, Matthew R. Brier, and Beau M. Ances. "A Method for Reducing the Effects of Motion Contamination in Arterial Spin Labeling Magnetic Resonance Imaging." Journal of Cerebral Blood Flow & Metabolism 35, no. 10 (2015): 1697–702. http://dx.doi.org/10.1038/jcbfm.2015.124.
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Arterial spin labeling (ASL) is a noninvasive method to measure cerebral blood flow (CBF). Arterial spin labeling is susceptible to artifact generated by head motion; this artifact is propagated through the subtraction procedure required to calculate CBF. We introduce a novel strategy for mitigating this artifact based on weighting tag/control volumes according to a noise estimate. We evaluated this strategy (DVARS weighting) in application to both pulsed ASL (PASL) and pseudo-continuous ASL (pCASL) in a cohort of normal adults (N = 57). Application of DVARS weighting significantly improved test-retest repeatability as assessed by the intra-class correlation coefficient. Before the application of DVARS weighting, mean gray matter intra-class correlation (ICC) between subsequent ASL runs was 0.48 and 0.51 in PASL and pCASL, respectively. With weighting, ICC was significantly improved to 0.63 and 0.58.
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Leandro, Catarina, Lurdes Ávila-Carvalho, Elena Sierra-Palmeiro, and Marta Bobo-Arce. "Judging in Rhythmic Gymnastics at Different Levels of Performance." Journal of Human Kinetics 60, no. 1 (2017): 159–65. http://dx.doi.org/10.1515/hukin-2017-0099.
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Abstract This study aimed to analyse the quality of difficulty judging in rhythmic gymnastics, at different levels of performance. The sample consisted of 1152 difficulty scores concerning 288 individual routines, performed in the World Championships in 2013. The data were analysed using the mean absolute judge deviation from the final difficulty score, a Cronbach’s alpha coefficient and intra-class correlations, for consistency and reliability assessment. For validity assessment, mean deviations of judges’ difficulty scores, the Kendall’s coefficient of concordance W and ANOVA eta-squared values were calculated. Overall, the results in terms of consistency (Cronbach’s alpha mostly above 0.90) and reliability (intra-class correlations for single and average measures above 0.70 and 0.90, respectively) were satisfactory, in the first and third parts of the ranking on all apparatus. The medium level gymnasts, those in the second part of the ranking, had inferior reliability indices and highest score dispersion. In this part, the minimum of corrected item-total correlation of individual judges was 0.55, with most values well below, and the matrix for between-judge correlations identified remarkable inferior correlations. These findings suggest that the quality of difficulty judging in rhythmic gymnastics may be compromised at certain levels of performance. In future, special attention should be paid to the judging analysis of the medium level gymnasts, as well as the Code of Points applicability at this level.
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Wang, Yulong, Shanshan Guo, Jiejiao Zheng, et al. "User testing of the psychometric properties of pictorial-based disability assessment Longshi Scale by healthcare professionals and non-professionals: a Chinese study in Shenzhen." Clinical Rehabilitation 33, no. 9 (2019): 1479–91. http://dx.doi.org/10.1177/0269215519846543.
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Objective:The aim of this study was to validate a novel pictorial-based Longshi Scale for evaluating a patient’s disability by healthcare professionals and non-professionals.Design:Prospective study.Setting:Rehabilitation departments from a grade A, class 3 public hospital, a grade B, class 2 public hospital, and a private hospital and seven community rehabilitation centers.Subjects:A total of 618 patients and 251 patients with functional disabilities were recruited in a two-phase study, respectively.Main measures:Outcome measure: pictorial scale of activities of daily living (ADLs, Longshi Scale). Reference measure: Barthel Index. The Spearman correlation coefficient was used to analyze the validity of Longshi Scale against Barthel Index.Results:In phase 1 study, from March 2016 to August 2016, the results demonstrated that the Longshi Scale was both reliable and valid (intraclass correlation coefficient based on two-way random effect (ICC2,1) = 0.877–0.974 for intra-rater reliability; ICC2,1= 0.928–0.979; κ = 0.679–1.000 for inter-rater reliability; intraclass correlation coefficient based on one-way random effect (ICC1,1) = 0.921–0.984 for test–retest reliability and Spearman correlation coefficient = 0.836–0.899). In the second phase, in March 2018, results further demonstrated that the Longshi Scale had good inter-rater and intra-rater reliability among healthcare professionals and non-professionals including therapists, interns, and personal care aids (ICC1,1= 0.822–0.882 on Day 1; ICC1,1= 0.842–0.899 on Day 7 for inter-rater reliability). In addition, the Longshi Scale decreased assessment time significantly, compared with the Barthel Index assessment ( P < 0.01).Conclusion:The Longshi Scale could potentially provide an efficient way for healthcare professionals and non-professionals who may have minimal training to assess the ADLs of functionally disabled patients.
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Schwertner, Debora Soccal, Raul Oliveira, Ana Paula Ramos Marinho, Magnus Benetti, Thais Silva Beltrame, and Renata Capistrano. "Reliability, Stability and Validity of the Brazilian Adaptation of the Oliveira Questionnaire on Low Back Pain in Young People." Acta Médica Portuguesa 30, no. 10 (2017): 691. http://dx.doi.org/10.20344/amp.8270.
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Introduction: The objective of this study was to adapt the Brazilian version, and verify the validity, reliability and internal consistency of the Oliveira questionnaire on low back pain in young people.Material and Methods: The questionnaire was translated from European Portuguese into Brazilian Portuguese by means of translation and re-translation. The validity of the contents was determined by experts who analyzed the clarity and pertinence of the questions. Fifteen young people aged 15 to 18 took part in the pre-test step (qualitative analysis), 40 in the test-retest (reliability) and 679 in the evaluation of internal consistency. The intra-class correlation coefficient and Spearman’s correlation coefficient were used in the reliability analysis (test-retest), and Cronbach’s alpha to determine the internal consistency (stability).Results: In the translation phase the questionnaire was modified and considered suitable, observing similarity and equivalence of the two versions. After being corrected by the experts in the validation of the contents, the instrument was considered suitable and valid, and in the pre-test, the young people suggested some modifications to make the questionnaire more succinct. With respect to reliability, the values for the intra-class correlation coefficient were between 0.512 – acceptable and 1 – excellent and Spearman’s correlation coefficient varied between 0.525 and 1, classifying the instrument as reproducible. The internal consistency was considered acceptable with a 0.757 Cronbach’s alpha.Discussion: The Oliveira questionnaire was choosen since it has been used in several Portuguese studies; moreover, it addresses the need to raise data regarding low back pain and associated risk factors.Conclusions: The Brazilian version of the Oliveira questionnaire on low back pain in young people showed valid and reliable cultural adaptation, with good reliability and stability.
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Picon, Patrícia, Gabriel J. C. Gauer, Vânia N. Hirakata, et al. "Reliability of the Social Phobia and Anxiety Inventory (SPAI) Portuguese version in a heterogeneous sample of Brazilian university students." Revista Brasileira de Psiquiatria 27, no. 2 (2005): 124–30. http://dx.doi.org/10.1590/s1516-44462005000200010.
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OBJECTIVE: To evaluate internal consistency and temporal stability trough test re-test reliability of the Portuguese version of the Social Phobia and Anxiety Inventory (SPAI) in a heterogeneous Brazilian sample. METHODS: After informed consent, the translated and adapted version of the SPAI Portuguese was tested and re-tested at a 14-day interval in a sample of 225 university students, both genders, from 4 different undergraduate courses. After double data entry, statistical analysis included Cronbach's alphas, Pearson and intra-class correlation coefficients. RESULTS: The studied sample consisted of 213 students from 4 sub-samples: 95 law students, 31 social communication students, 54 civil engineering students and 33 dental medicine students. The mean age was 23 (±6) years and 110 (51.6%) were female. The Cronbach' alpha was 0.96, no difference for both genders. The differential (total) score of the SPAI Portuguese showed Pearson coefficient 0.83 (95% CI 0.78-0.87) and Intra-class coefficient 0.83 (95% CI 0.78-0.86). There was no statistical difference in Pearson coefficients between genders (p = 0.121) and the 4 sub-samples (p = 0.258). CONCLUSION: The results do not ensure validity, however, the SPAI Portuguese version presented a good content homogeneity with satisfactory level of internal consistency. The temporal stability evaluated was substantial. The results showed that the Portuguese SPAI presents perfectly acceptable reliability for both genders and suggest that it can be used in Brazilian populations
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Birks, Ryan, Deborah M. Fine, Stacey B. Leach, et al. "Breed-Specific Vertebral Heart Scale for the Dachshund." Journal of the American Animal Hospital Association 53, no. 2 (2017): 73–79. http://dx.doi.org/10.5326/jaaha-ms-6474.
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ABSTRACT The objectives of this study were to determine a breed-specific vertebral heart scale (VHS) range for the dachshund and compare results to the established reference range of 9.7 ± 0.5, calculate inter-observer variability, and correlate VHS with echocardiography. Fifty-one normal dachshunds had radiographs and an echocardiogram performed. Five observers measured VHS to the nearest 0.25 vertebra. The data was analyzed using one-way analysis of variance, Wilcoxon Rank Sum test, Mann-Whitney rank sum test, calculation of reference and confidence intervals, Spearman rank-order correlations, and generation of intra-class correlations and confidence intervals. P &lt; .05 was considered significant. The median for right lateral VHS was significantly larger than left (10.3 [range 9.25–11.55] versus 10.1 [range, 8.7–11.31], p &lt; .0001). VHS for females was significantly larger than for males (left: 10.56 [9.2–11.31] versus 9.74 [8.7–10.88] and right: 10.8 [9.5–11.55] versus 9.99 [9.25–10.8], p = .0002). Observer consistency was high with an intra-class correlation coefficient of 0.95. No significant correlation was found between left atrial echocardiographic parameters and VHS. Results indicate normal dachshunds have a median VHS above the published generic canine reference range, and VHS can be reliably performed by observers with varying degrees of clinical experience.
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Bučar Pajek, Maja, Warwick Forbes, Jernej Pajek, Bojan Leskošek, and Ivan Čuk. "RELIABILITY OF REAL TIME JUDGING SYSTEM." Science of Gymnastics Journal 3, no. 2 (2011): 47–54. https://doi.org/10.52165/sgj.3.2.47-54.
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The aim of our research was to analyse the implementation of a Real Time Judging System (RTJS) . In this research, 6 volunteer international level judges evaluated male parallel bars routines from Šalamun’s memorial 2009 (World cup series B artistic gymnastics competition). The computer assisted system with a keyboard interface was used to record and display deductions from individual judges in real time. For validity assessment, the mean absolute and rank deviations of judges’ execution scores, Kendall’s W and ANOVA statistics were calculated. For consistency and reliability assessment, item-total correlations, Cronbach’s alpha coefficient, intra-class correlations and Armor’s theta were calculated. The overall results in terms of consistency (Cronbach’s alpha mostly above 0.96) and reliability (Armor’s theta 0.95, intra-class correlation for single and average measures 0.77 and 0.95, respectively) were satisfactory. As compared to results of judging analysis from a previous high level competition at Universiade 2009 higher indices of individual judge bias were found. In conclusion, RTJS shows promise as an efficient system to increase the transparency and informative value of judging while maintaining the same level of reliability.
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Paudel, Sushil, Prajwal Pudasaini, Sagar GC, and Sudarshan Paudel. "Translation, Cross-Cultural Adaptation and Assessment of Psychometric Properties of Nepalese Version of Skindex-16." Civil Medical Journal 1, no. 1 (2023): 51–55. http://dx.doi.org/10.59338/cmj.10.
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Introduction: Assessment of the quality of life is an important aspect of managing skin diseases. The tools to measure the health related quality of life are still scarce in our country. We have planned to add one useful and widely used tool in the local language. The main objective of this study was to translate English version of skindex-16 in Nepali language and evaluate its psychometric properties. Methods: Standard protocol was followed to translate the English version of Skindex-16 into Nepali language after due permission from the Mapi Trust. The translated version was completed by the patients in the out-patient unit of dermatology department, which was subjected to statistical validation. Some participants completed the same questionnaire in seven to ten days gap. Cronbach’s, Intra-Class correlation, Pearson’s correlation and factor analysis were performed for validation of newly translated Skindex-16 version. Results: In total 190 people were enrolled in this study, 92 (48.4%) were males. One hundred and nineteen of the total participants had inflammatory conditions, 8 had facial pigmentation and remaining 63 had a solitary non-inflammatory skin lesions. Overall Cronbach’s was 0.91, for items related to symptoms it was 0.74, for emotions .91 and for functioning .86. The mean inter-item correlation coefficient was 0.403, the Intra-class correlation coefficient was 0.918 and the Pearson’s correlation coefficient 0.929 (P value <.001). The Principal component analysis derived three factors and the items loaded on these factors satisfactorily. Conclusion: The Nepali version of Skindex-16 is a well translated and validated tool to measure the health related quality of life in skin diseases.
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Feniman, Sibele Pelloso, Jefferson Rosa Cardoso, Isabela Lucia Pelloso Villegas, Lais Faganello Dela Bela, Suhaila Mahmoud Smaili Santos, and Edson Lopes Lavado. "Development and validation of a quality of life questionnaire in individuals with spinal cord injury." Acta Fisiátrica 23, no. 4 (2016): 172–79. http://dx.doi.org/10.11606/issn.2317-0190.v23i4a137668.
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Objective: Create and test the psychometric proprieties of the specific instrument for the quantification of the quality of life in subjects with spinal cord injuries. Methods: From the existing consensus methods was chosen the Delphi technique for the creation of the questionnaire and the SF-36 for criteria method. Results: The internal consistence was α=0,827. The intra and inter evaluators confidence shows itself high by the intra class correlation coefficient and the Brand and Altman test by the difference of average. Can be observed strong correlations between the QVLM and SF-36 in the functional capacity and physical aspects domains and moderate correlation in the health state and emotional aspects domains. There was a significant difference between the four applications of QVLM, demonstrating that the questionnaire is sensible to change. Conclusion: The QVLM was created with a suitable methodology and the evaluation of the psychometrics proprieties turn out to be on a valid, reliable, consisting and sensible to changes instrument
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VERSPEELT, P., M. DE MUYNCK, G. VANDERSTRAETEN, L. VANDEN BOSSCHE, G. STASSIJNS, and L. ÖCZAKAR. "The single assessment numeric evaluation correlates with the western ontario rotator cuff score in non-traumatic shoulder disease." Acta Orthopaedica Belgica 89, no. 1 (2023): 162–66. http://dx.doi.org/10.52628/89.1.11240.
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Patient-reported outcome measures (PROMs) are essential clinical instruments used for assessing patient function and assisting in clinical decision making. The Western Ontario Rotator Cuff (WORC) index is the PROM for shoulder pathology with the most psychometric properties but is very time consuming. The Single Assessment Numeric Evaluation (SANE) method is a PROM that takes less time to answer and to analyze. The aim of the study is to evaluate the intra- class correlation between these two outcome scores in establishing shoulder function in patients with non-traumatic rotator cuff pathologies. Fifty five subjects of both genders and different ages presenting with non-traumatic shoulder pain for more than 12 weeks had a physical examination and ultrasound as well as MRI arthrogram scan findings that were consistent of a non-traumatic rotator cuff (RC) based pathology. On the same moment a WORC index and a SANE score questionnaire were filled in by the subject. The intra class correlation of both PROMs was statistically analyzed. The WORC index score and the SANE score show a moderate correlation with an Intra Class Coefficient (ICC) of r = 0.60 (95% CI:0.40-0.75). This study demonstrates a moderate correlation between the WORC index score and the SANE score in rating the disability of patients with atraumatic RC disease. The SANE score is applicable in research and clinical practice and is for the patient and the researcher an almost no time consuming PROM.
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Ilyas, Sahar, Qurat Ul Ain, Rabia Masood, Yasha Sajjad, Asad Habib, and Syeda Sana Zahid. "Evaluating the reliability and validity of the Urdu translation of Nijmegen questionnaire for patients with hyperventilation syndrome." Anaesthesia, Pain & Intensive Care 28, no. 6 (2024): 1023–28. https://doi.org/10.35975/apic.v28i6.2610.
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Background & Objective: Nijmegen Questionnaire (NQ) was developed in order to screen hyperventilation syndrome (HVS) and for better understanding of its questions and in lieu with the patient-centric model, it has been translated into other languages. This study aimed at translating English version of NQ in to Urdu and for evaluating the reliability and validity of Urdu based NQ (UNQ) in healthy population and in patients with hyperventilation. Methodology: This study followed cross sectional design with non-probability convenient sampling technique. Study was completed over the period of 6 months w.e.f. 19th June, 2021 and recruited a total of 70 participants (50 with HVS and 20 healthy people) after getting approvals from pulmonary department based in a government hospital and institutional ethical research board committee. Urdu translation of NQ was a four steps process involving two bilingual translators and a backward translation. Intra class correlation coefficient (ICC), Cronbach’s alpha, Pearson Correlation and content validity index were utilized for assessing reliability and validity. Results: ICC was 0.96, representing good test re-test reliability. The reliability and internal validity gave a value of 0.96. Pearson’s correlation coefficients were measured at 0.78 for tightness across chest and 0.82 for shortness of breath. Conclusion: UNQ is a valid assessment tool for the patients with HVS. It represented overall good reliability, content and construct validity. Abbreviations: ICC - Intra class correlation coefficient; NQ - Nijmegen Questionnaire; UNQ - Urdu based NQ; Keywords: Hyperventilation, Translation, Questionnaire, Language, Urdu. Citation: Ilyas S, Ul Ain Q, Masood R, Sajjad Y, Habib A, Zahid SZ. Evaluating the reliability and validity of the Urdu translation of Nijmegen questionnaire for patients with hyperventilation syndrome. Anaesth. pain intensive care 2024;18(6):1023-1028; DOI: 10.35975/apic.v28i6.2610 Received: July 15, 2024; Reviewed: October 03, 2024; Accepted: October 03, 2024