Relevant bibliographies by topics / Cohens kappa coefficient

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Academic literature on the topic 'Cohens kappa coefficient'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Cohens kappa coefficient"

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Grimm, Peter, Martina Kastrup Loft, Claus Dam, Malene Roland Vils Pedersen, Signe Timm, and Søren Rafael Rafaelsen. "Intra- and Interobserver Variability in Magnetic Resonance Imaging Measurements in Rectal Cancer Patients." Cancers 13, no. 20 (2021): 5120. http://dx.doi.org/10.3390/cancers13205120.

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Colorectal cancer is the second most common cancer in Europe, and accurate lymph node staging in rectal cancer patients is essential for the selection of their treatment. MRI lymph node staging is complex, and few studies have been published regarding its reproducibility. This study assesses the inter- and intraobserver variability in lymph node size, apparent diffusion coefficient (ADC) measurements, and morphological characterization among inexperienced and experienced radiologists. Four radiologists with different levels of experience in MRI rectal cancer staging analyzed 36 MRI scans of 36
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Schremmer, Tobias, Christian Dejaco, Florian Recker, et al. "OMERACT GCA phantom project: validation of a 3D-printed ultrasound training phantom for diagnosis of giant cell arteritis." RMD Open 11, no. 1 (2025): e005316. https://doi.org/10.1136/rmdopen-2024-005316.

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ObjectiveUltrasonography is crucial for diagnosing giant cell arteritis (GCA); however, training opportunities are rare. This study tested the reliability of ultrasonography findings and measurements of the intima-media thickness (IMT) among ultrasonography experts by using phantoms of the axillary (AA) and temporal arteries (TA) created with high-resolution 3D printing.MethodsTwenty-eight participants from 12 European countries received eight sets of phantoms of the AA and the superficial TA (including common, frontal and parietal branches), which were examined in a blinded fashion according
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Hamedani, Nasim Shahidi, Johannes Oldenburg, Bernd Pötzsch, and Jens Müller. "Optimization and evaluation of a two-stage chromogenic assay procedure for measurement of emicizumab plasma levels." PLOS ONE 17, no. 7 (2022): e0271330. http://dx.doi.org/10.1371/journal.pone.0271330.

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Emicizumab mimics the hemostatic activity of activated factor VIII (FVIIIa) within the tenase complex. Despite functional similarities between FVIIIa and emicizumab, conventional laboratory methods designed for monitoring of FVIII activity are inappropriate for the measurement of emicizumab. At present, a modified one stage (FVIII) assay (mOSA) is mainly used for emicizumab monitoring. Two-stage chromogenic FVIII assays based on human factors can be used, although limited performance due to lack of corresponding optimization might be observed. Furthermore, the presence of FVIII or anticoagulan
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Suponeva, Natalya A., Dzhamilya G. Yusupova, Kseniya A. Ilyina, et al. "Validation of the modified Ashworth scale in Russia." Annals of Clinical and Experimental Neurology 14, no. 1 (2020): 89–96. https://doi.org/10.25692/acen.2020.1.10.

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Spasticity after stroke is a factor that causes disability and restricts activities of daily living, and represents a problem for both doctors and patients relatives. At the present time, the modified Ashworth scale (MAS) is a useful method of assessing increased muscle tone in patients after a cerebrovascular incident. The aim of the work is the linguistic and cultural adaptation of the MAS, with subsequent evaluation of its psychometric properties. Materials and methods. The study included 50 patients. The validation procedure consisted of linguistic and cultural adaptation and evaluation of
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Lukama, Lufunda, Colleen Aldous, Charles Michelo, and Chester Kalinda. "Ear, Nose and Throat (ENT) disease diagnostic error in low-resource health care: Observations from a hospital-based cross-sectional study." PLOS ONE 18, no. 2 (2023): e0281686. http://dx.doi.org/10.1371/journal.pone.0281686.

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Although the global burden of ear, nose and throat (ENT) diseases is high, data relating to ENT disease epidemiology and diagnostic error in resource-limited settings remain scarce. We conducted a retrospective cross-sectional review of ENT patients’ clinical records at a resource-limited tertiary hospital. We determined the diagnostic accuracy and appropriateness of patient referrals for ENT specialist care using descriptive statistics. Cohens kappa coefficient (κ) was calculated to determine the diagnostic agreement between non-ENT clinicians and the ENT specialist, and logistic regression a
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Prihatini, Septimar, Djemari Mardapi, and Sutrisno Sutrisno. "PENGEMBANGAN MODEL PENILAIAN AKHLAK PESERTA DIDIK MADRASAH ALIYAH." Jurnal Penelitian dan Evaluasi Pendidikan 17, no. 2 (2013): 347–68. http://dx.doi.org/10.21831/pep.v17i2.1705.

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Tujuan penelitian ini adalah mengembangkan model penilaian akhlak peserta didik Madrasah Aliyah. Konstruk akhlak dikembangkan dengan pendekatan akhlak sebagai aspek afektif dan konsep religiousity dari Glock and Stark (1966). Penelitian pengembangan ini menggunakan metode lapor diri dan observasi tak langsung, melibatkan 291 siswa dan 26 guru dengan teknik purposive sampling. Pengujian kualitas instrumen meliputi: validasi tampang, isi, dan konstruk; reliabilitas (konsistensi internal dan reliabilitas interrater); dan uji stabilitas instrumen. Hasil pe-nelitian ini adalah: (1) Model penilaian
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Alci, Aysun, Fatih Ikiz, Necim Yalcin, et al. "Prediction of Clavien Dindo Classification ≥ Grade III Complications After Epithelial Ovarian Cancer Surgery Using Machine Learning Methods." Medicina 61, no. 4 (2025): 695. https://doi.org/10.3390/medicina61040695.

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Background and Objectives: Ovarian cancer surgery requires multiple radical resections with a high risk of complications. The aim of this single-centre, retrospective study was to determine the best method for predicting Clavien–Dindo grade ≥ III complications using machine learning techniques. Material and Methods: The study included 179 patients who underwent surgery at the gynaecological oncology department of Antalya Training and Research Hospital between January 2015 and December 2020. The data were randomly split into training set n = 134 (75%) and test set n = 45 (25%). We used 49 predi
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Warrens, Matthijs J. "New Interpretations of Cohen’s Kappa." Journal of Mathematics 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/203907.

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Cohen’s kappa is a widely used association coefficient for summarizing interrater agreement on a nominal scale. Kappa reduces the ratings of the two observers to a single number. With three or more categories it is more informative to summarize the ratings by category coefficients that describe the information for each category separately. Examples of category coefficients are the sensitivity or specificity of a category or the Bloch-Kraemer weighted kappa. However, in many research studies one is often only interested in a single overall number that roughly summarizes the agreement. It is sho
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Hasasna, Muhammad, Samvel V. Apresyan, Alexander G. Stepanov, Roman V. Batov, Victoria A. Semenova, and Valeria K. Suonio. "Clinical justification of the effectiveness of the use of digital devices for determining the color of the tooth." Russian Journal of Dentistry 25, no. 4 (2022): 323–30. http://dx.doi.org/10.17816/1728-2802-2021-25-4-323-330.

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BACKGROUND: The procedure for determining the color of teeth can be carried out visually using colors or special devices, or both methods at the same time. The visual definition of shades using popular instrumental techniques, although ubiquitous, is nevertheless very subjective. The hardware method for determining the color of teeth consists in an objective computer analysis of the image obtained under ideal optical conditions. Ambient light should not affect the color detection results obtained by spectrophotometers and colorimeters. The main advantage of the hardware method of determining t
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Kvålseth, Tarald O. "Measurement of Interobserver Disagreement: Correction of Cohen’s Kappa for Negative Values." Journal of Probability and Statistics 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/751803.

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As measures of interobserver agreement for both nominal and ordinal categories, Cohen’s kappa coefficients appear to be the most widely used with simple and meaningful interpretations. However, for negative coefficient values when (the probability of) observed disagreement exceeds chance-expected disagreement, no fixed lower bounds exist for the kappa coefficients and their interpretations are no longer meaningful and may be entirely misleading. In this paper, alternative measures of disagreement (or negative agreement) are proposed as simple corrections or modifications of Cohen’s kappa coeff
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Books on the topic "Cohens kappa coefficient"

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Streiner, David L., Geoffrey R. Norman, and John Cairney. Reliability. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199685219.003.0008.

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This chapter reviews the basic theory of reliability, and examines the relation between reliability and measurement error. It derives the standard form of reliability, the intraclass correlation or ICC, from repeated measures ANOVA. The chapter explores issues in the application of the reliability coefficient, including absolute versus relative reliability, the reliability of multiple observations, and the standard error of measurement. It examines several other measures of reliability—Cohen’s kappa, Pearson r, and the method of Altman and Bland—and derives the relation between them and the IC
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Book chapters on the topic "Cohens kappa coefficient"

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Pisarkova, Valeria P., Denis N. Garaev, Ekaterina A. Lopukhova, Azat R. Bilyalov, Ruslan V. Kutluyarov, and Alexey S. Kovtunenko. "Determination of Oncourological Pathologies Based on the Analysis of Medical Images Using Machine Learning Methods." In Recent Advancements in Multimedia Data Processing and Security. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-7216-3.ch009.

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The chapter presents a method for diagnosing oncourological diseases based on machine learning algorithms. MobileNet50, ResNet50 convolutional neural networks are used to solve the problem of classifying patient biopsy image segments according to the Gleason scale. Augmentation technologies were applied to the existing data set for better performance of the neural network. The accuracy of the algorithm was estimated by the total error and the Cohen's Kappa coefficient. The results of the algorithm in software show a good level of accuracy: in 65% of cases, the algorithm accurately determined t
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Streiner, David L., Geoffrey R. Norman, and John Cairney. "Reliability." In Health Measurement Scales, 6th ed. Oxford University PressOxford, 2024. http://dx.doi.org/10.1093/med/9780192869487.003.0008.

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Abstract This chapter reviews the basic theory of reliability, and examines the relation between reliability and measurement error. It derives the standard form of reliability, the intraclass correlation or ICC, from repeated measures ANOVA. The chapter explores issues in the application of the reliability coefficient, including absolute versus relative reliability, the reliability of multiple observations, and the standard error of measurement. It examines several other measures of reliability—Cohen’s kappa, Pearson r, and the method of Altman and Bland—and derives the relation between them a
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Paans Wolter, Sermeus Walter, Nieweg Roos, and Van Der Schans Cees. "Development of a Measurement Instrument for Nursing Documentation in the Patient Record." In Studies in Health Technology and Informatics. IOS Press, 2009. https://doi.org/10.3233/978-1-60750-024-7-297.

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Objectives: To develop, validate and test the reliability of a measurement instrument that measures the extent to which records describe essential aspects of nursing care such as the admission report, nursing diagnoses, interventions, and progress and outcome evaluations. Method:. A measurement instrument was developed based on the Cat-ch-Ing instrument and the Scale for Degrees of Accuracy in Nursing Diagnoses. A record screening was conducted in 7 hospitals in the Netherlands. Content validity was tested by using two Delphi panels. Each of the 250 records was assessed by two reviewers indepe
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Kurtz-Rossi Sabrina, Rikard R.V., and McKinney Julie. "Learning from the Field and Its Listserv: Issues That Concern Health Literacy Practitioners." In Studies in Health Technology and Informatics. IOS Press, 2017. https://doi.org/10.3233/978-1-61499-790-0-444.

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This study assesses the content of email messages posted to the Health Literacy Discussion List (HLDL) during a two-year period. The study identifies issues of concern to list subscribers, describes the purposes the list serves for health professionals, and contributes to the health literacy literature by providing an email listserv as a research corpus. The authors conducted an inductive qualitative analysis of email posts to the HLDL from October 2013 to October 2015. Using an iterative process, the authors identified descriptive categories for types of posts and topics of posts. The first (
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Griffiths Patricia C. and Sanford Jon A. "ADL Task Performance in Mobility Impaired Older Dyads: Preliminary Data from the CG ASSIST Pilot." In Assistive Technology Research Series. IOS Press, 2013. https://doi.org/10.3233/978-1-61499-304-9-446.

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The ‘Caregiver Assessment of Skill Sets & Individualized Support through Training’ or ‘CG ASSIST’ project is a feasibility study that was designed to adapt, implement and evaluate a comprehensive hands-on skills training program with family caregivers of older adults who required assistance with transferring and/or positional change during daily activities. Specific objectives were to (1) field test a comprehensive in-home intervention delivered by a clinical expert which included training in caregiving skills and provision of assistive technolog
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Conference papers on the topic "Cohens kappa coefficient"

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Vieira, Susana M., Uzay Kaymak, and Joao M. C. Sousa. "Cohen's kappa coefficient as a performance measure for feature selection." In 2010 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE). IEEE, 2010. http://dx.doi.org/10.1109/fuzzy.2010.5584447.

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Lučić, Bono, Viktor Bojović, Antonija Kraljević, and Jadranko Batista. "Confusion about the choice of evaluation metrics for model performance assesment in chemoinformatics, bioinformatics and in general." In 2nd International Conference on Chemo and Bioinformatics. Institute for Information Technologies, University of Kragujevac, 2023. http://dx.doi.org/10.46793/iccbi23.067l.

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In chemo/bioinformatics, we evaluate the quality of models using model performance parameters/metrics. A large group of models in this field are binary classification models, which are a consequence of the general digitization of information and data in chemistry and life sciences. When classifying different models developed with different methods and by different research groups for the same data sets, we try to classify the models according to their quality. In this case, the question of selecting appropriate metrics arises, leading to incorrect (non-optimal) application of inappropriate met
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Eugenia Sortillon González, Patricia, Aide Aracely Maldonado Macias, David Saenz Zamarrón, Juan Luis Hernández Arellano, and Enrique Javier De La Vega Bustillos. "Influence of workstation design on intra-rater reliability in sculpting kneading task assessments." In 16th International Conference on Applied Human Factors and Ergonomics (AHFE 2025). AHFE International, 2025. https://doi.org/10.54941/ahfe1006465.

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Intra-rater reliability is a crucial metric for evaluating the consistency of ratings made by the same individual across repeated trials. This study examines intra-rater reliability for posture assessment during a kneading sculpting task on worktables titled at 0° and 25°, and analyzes how table tilt and other factors affect the evaluation consistency. Thirty-nine experienced sculptors performed the tasks under both conditions in a randomized sequence. One rater assessed upper arm, lower arm and wrist postures across three trials. Postures were assessed using the Rapid Upper Limb Assessment me
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Vieira, Daniella Serafin Couto, Laura Otto Walter, Ana Carolina Rabello de Moraes, João Péricles da Silva Jr, and Maria Cláudia Santos Silva. "CROSS-SECTIONAL ANALYSIS OF CLINICAL AND MORPHOLOGICAL FACTORS OF BREAST CANCER IMMUNOPHENOTYPES: A COMPARATIVE STUDY OF TWO DIFFERENT METHODOLOGIES OVER A 24‑YEAR HISTORICAL SERIES." In Scientifc papers of XXIII Brazilian Breast Congress - 2021. Mastology, 2021. http://dx.doi.org/10.29289/259453942021v31s1043.

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Introduction: Breast cancer (BC) is the most incident form of cancer in women worldwide. The widespread use of breast screening programs, as well advances in molecular biology, and new drugs in chemotherapy have contributed to the recent survival rate improvement in high income countries. Furthermore, the study of cancer genome led to the elucidation of the intrinsic subtypes of invasive breast cancer (IBC), consequently, the success rate of targeted therapies improved the outcome in patients. However, considering that immunohistochemistry (IHC) is one of the main methods to determine the prof
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Moreto-Planas, L., MJ Sagrado, R. Mahajan, et al. "Can point-of-care ultrasound support tuberculosis diagnosis in children? The experience of MSF in Guinea-Bissau." In MSF Scientific Days International 2022. MSF-USA, 2022. http://dx.doi.org/10.57740/b8m1-p572.

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INTRODUCTION Tuberculosis (TB) is an important cause of morbidity and mortality in children and over 50% of childhood TB remains undiagnosed every year. As microbiological confirmation is low (<30%), the majority of cases in low and middle-income countries are diagnosed on clinical grounds. Point-of-care ultrasound (POCUS) is a non-invasive bedside tool, and TB-focused POCUS has been validated for diagnosis of TB in adults with HIV. We aimed to describe the performance and findings of TB-focused POCUS for children with presumptive TB at a tertiary care hospital in Guinea- Bissau, a setting
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