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Dissertations / Theses on the topic 'Intraclass correlation'

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Published: 4 June 2021

Last updated: 11 February 2022

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1

Yu, Jianhui. "On Intraclass Correlation Coefficients." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/math_theses/75.

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This paper uses Maximum likelihood estimation method to estimate the common correlation coefficients for multivariate datasets. We discuss a graphical tool, Q-Q plot, to test equality of the common intraclass correlation coefficients. Kolmogorov-Smirnov test and Cramér-von Mises test are used to check if the intraclass correlation coefficients are the same among populations. Bootstrap and empirical likelihood methods are applied to construct the confidence interval of the common intraclass correlation coefficients.

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2

Smoljanovic, Lada. "The estimation of intraclass correlation coefficients." Thesis, University of Hull, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301491.

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3

Liu, Huayu. "Modified Profile Likelihood Approach for Certain Intraclass Correlation Coefficient." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/math_theses/96.

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In this paper we consider the problem of constructing confidence intervals and lower bounds forthe intraclass correlation coefficient in an interrater reliability study where the raters are randomly selected from a population of raters.The likelihood function of the interrater reliability is derived and simplified, and the profile likelihood based approach is readily available for computing the confidence intervals of the interrater reliability. Unfortunately, the confidence intervals computed by using the profile likelihood function are in general too narrow to have the desired coverage proba

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4

Wu, Baohua. "Data Driven Approaches to Testing Homogeneity of Intraclass Correlation Coefficients." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/math_theses/92.

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The test of homogeneity for intraclass correlation coefficients has been one of the active topics in statistical research. Several chi-square tests have been proposed to test the homogeneity of intraclass correlations in the past few decades. The big concern for them is that these methods are seriously biased when sample sizes are not large. In this thesis, data driven approaches are proposed to testing the homogeneity of intraclass correlation coefficients of several populations. Through simulation study, data driven methods have been proved to be less biased and accurate than some commonly u

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5

Ukoumunne, Obioha Chukwunyere. "Confidence intervals for the intraclass correlation coefficient in cluster randomised trials." Thesis, King's College London (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418293.

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6

Bai, Shasha. "Inference on Intraclass Correlation Coefficients arising in a General Clustered Repeated-Measures Design." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1395614770.

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7

Perrett, Jamis J. "Using prior information on the intraclass correlation coefficient to analyze data from unreplicated and under-replicated experiments." Diss., Manhattan, Kan. : Kansas State University, 2004. http://hdl.handle.net/2097/45.

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8

Rodrigue, Natalie. "A comparison of the performance of Generalized Procrustes analysis and the intraclass coefficient of correlation to estimate interrater reliability." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0022/MQ50868.pdf.

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9

Wang, Luqiang. "Contributions to estimation of measures for assessing rater reliability." Diss., Temple University Libraries, 2009. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/44053.

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Statistics<br>Ph.D.<br>Reliability measures have been well studied over many years, beginning with an entire chapter devoted to intraclass correlation in the first edition of Fisher (1925). Such measures have been thoroughly studied for two factor models. This dissertation, motivated by a medical research problem, extends point and confidence interval estimation of both intraclass correlation coefficient and interater reliability coefficient to models containing three crossed random factors -- subjects, raters and occasions. The intraclass correlation coefficient is used when decision is made

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10

Stout, Tyler. "Multilevel modeling issues and the measurement of stress is multilevel data." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/2979.

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Multilevel datasets are commonly used and increasingly popular in research in the organizational and other social sciences. These models are complex and have many elements beyond those found in more traditional linear models. However, research on how multilevel models perform is lacking. The current paper examined the impact of common factors (average cluster size, cluster size distribution, average number of clusters, strength of the intraclass correlation coefficient, and effect sizes of individual and cluster level variables, and their interaction) in multilevel datasets. Monte Carlo data s

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11

Sousa, Roberto Pequeno de. "Tamanho de parcela para experimentação com girassol." Universidade Federal Rural do Semi-Árido, 2013. http://bdtd.ufersa.edu.br:80/tede/handle/tede/79.

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Made available in DSpace on 2016-08-12T19:15:26Z (GMT). No. of bitstreams: 1 RobertoPS_TESE.pdf: 1647938 bytes, checksum: dc34992c335e50d26416144e8fb502c1 (MD5) Previous issue date: 2013-11-29<br>This study aims to determine the appropriate size of field plots for field experimentation with sunflower. An experiment was conducted in randomized complete blocks design with 14 cultivars of sunflower and 10 replications. The field plots consisted of four rows of six-meter long rows, spaced 0.7 m and 0.3 m between plants, with a total area of 16.8 m2. The useful area of the plot (7.56 m2), consist

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12

Lee, Kyung Ah. "Analysis of the Total Food Folate Intake Data from the National Health and Nutrition Exa-amination Survey (Nhanes) Using Generalized Linear Model." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/math_theses/80.

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The National health and nutrition examination survey (NHANES) is a respected nation-wide program in charge of assessing the health and nutritional status of adults and children in United States. Recent cal research found that folic acid play an important role in preventing baby birth defects. In this paper, we use the generalized estimating equation (GEE) method to study the generalized linear model (GLM) with compound symmetric correlation matrix for the NHANES data and investigate significant factors to ence the intake of food folic acid.

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13

Giraudeau, Bruno. "Sensibilite du coefficient de correlation intraclasse a une observation extreme." Paris 7, 1997. http://www.theses.fr/1997PA077112.

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Le coefficient de correlation intraclasse, defini comme la proportion de la variabilite totale due a la variabilite inter-sujets, est classiquement utilise pour estimer la reproductibilite d'un instrument de mesure. L'objet de ce travail est d'etudier l'influence d'observations extremes sur ce coefficient. Une observation (i. E. Un vecteur de p mesures) est extreme soit parce que la moyenne des p mesures s'ecarte de facon anormale de la moyenne globale, soit parce que la variance des p mesures est anormalement elevee. Deux approches permettant le traitement de ces observations ont ete envisage

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14

Bergamaschi, Denise Pimentel. "Correlação intraclasse de Pearson para pares repetidos: comparação entre dois estimadores." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/6/6132/tde-01102014-105050/.

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Objetivo. Comparar, teórica e empiricamente, dois estimadores do coeficiente de correlação intraclasse momento-produto de Pearson para pares repetidos Pi. O primeiro é o estimador \"natural\", obtido mediante a correlação momento-produto de Pearson para membros de uma mesma classe (rI) e o segundo, obtido como função de componentes de variância (icc). Métodos. Comparação teórica e empírica dos parâmetros e estimadores. A comparação teórica envolve duas definições do coeficiente de correlação intraclasse PI como medida de confiabilidade (*), para o caso de duas réplicas, assim como uma apresent

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15

Lajos, Giuliane Jesus 1974. "Estudo multicêntrico de investigação em prematuridade no Brasil : implementação, correlação intraclasse e fatores associados à prematuridade espontânea = Multicenter study on preterm birth in Brazil: implementation, intracluster correlation and associated factors to spontaneous preterm birth." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313017.

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Orientador: Renato Passini Júnior<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-11-27T11:47:19Z (GMT). No. of bitstreams: 1 Lajos_GiulianeJesus_D.pdf: 13164683 bytes, checksum: 157ab3724e88a3aa83c69cd29bf06c06 (MD5) Previous issue date: 2014<br>Resumo: Introdução: A prematuridade é um problema complexo de saúde pública, sendo a principal causa de morbidade e mortalidade neonatais, com tendência a aumento nas últimas décadas. Foi proposto um estudo com a participação de vários hospitais do Brasil, a fim de avaliar di

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16

Hsieh, Ming-Yu, and 謝茗伃. "Point Estimation analysis for Intraclass Correlation Coefficients." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/37854929522545263793.

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碩士<br>國立交通大學<br>管理科學系所<br>104<br>Intraclass correlation coefficients are used extensively to measure the reliability or degree of resemblance among group members in multilevel research. The study compares the behavior of several intraclass correlation estimators in terms of bias, bias ratio, and mean square error. Monte Carlo simulation results revealed that the mutual dominance relationship among the indices. The numerical investigations provide guidelines to help researchers choose between the competing measures.

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17

Chen, Chia-Cheng. "Assessing agreement with intraclass correlation coefficient and concordance correlation coefficient." 2009. http://www.lib.ncsu.edu/theses/available/etd-05202009-163011/unrestricted/etd.pdf.

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18

Chang, Wei-Wen, and 張暐文. "The Efficiency of Intraclass Correlation Estimating for Binary Data." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/41647128621093505484.

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碩士<br>國立中興大學<br>農藝學系<br>93<br>Binary data occur frequently in research of epidemiology, sociology, biology and so forth, such as studies of familial diseases and repeated measurement studies and like versa. In these conditions, there is a correlation between these observations. The intraclass correlation coefficient (ICC) is a quantitative measure of the resemblance among observations within clusters. At least 20 different point estimators of the ICC have been proposed in various areas of application. However, techniques for binary data have been less developed. And the efficiency and applicat

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19

Wong, Chung Fai Paddison. "Composite estimators of small-area means and the intraclass correlation coefficient." 2004. http://hdl.handle.net/1993/17916.

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20

Cheng, Yu Chun, and 鄭宇君. "Estimation of intraclass correlation coefficient and Kappa statistic in categorical data." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/93387061533488183894.

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21

Yang, Nai-Chen, and 楊乃蓁. "Sample size Calculation for Hypothesis Testing of Intraclass Correlation Coefficients (2)." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/59526552985122107636.

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碩士<br>國立交通大學<br>管理科學系所<br>104<br>In the practical applications, Intraclass correlation coefficients is the model in random effects model. The main contribution in this research is how to determine the optimum number of samples based on ICC(2). For the begging we learn to use the tools of measurement is the Pearson correlation coefficient. Although, we can know the correlation between variables, but satisfy the assumption is difficult in the reality. The reason is that the two variables of Pearson correlation coefficient t must be assumed independent. Therefore, in practical application is not

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22

Tai, Chu-Chun, and 戴竹君. "Sample Size Calculations for Precise Interval Estimation of Intraclass Correlation Coefficient (2)." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/4mm6rh.

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碩士<br>國立交通大學<br>管理科學系所<br>103<br>Whether in the natural sciences or the social sciences, intraclass correlation coefficient is always used to measure the degree of the correlation between the interclass variation and the intraclass variation. This index reflects the differences between groups of data. It’s always regard as a way to inspect variation of variable is interpreted by variable between groups for evaluating whether integrating individual data to group information. Also, intraclass correlation coefficient is used to inspect the consistency of retest measured results. In this dissertat

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23

Tsai, Hsin-Ni, and 蔡忻妮. "Approximate Bayesian approaches for assessing intraclass correlation coefficients in dependent binary data." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/07158093177833882557.

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碩士<br>國立彰化師範大學<br>統計資訊研究所<br>99<br>Medical data in clinical studies are commonly carried out in clustered settings, where the subjects are correlated within clusters. When observations approximately follow a normal distribution, the intraclass correlation coefficient (ICC) is frequently used to assess the similarity within clusters with respect to the particular biological or environmental characteristics. However, for correlated binary data, it is difficult to obtain directly the ICCs by the definition of the proportion of the total variation explained by variation between clusters. In this a

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24

Yu, Chia-Chun, and 余嘉淳. "The effects of intraclass correlation coefficients on regression analyses with clustered binary data." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/99909520707197232422.

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碩士<br>國立陽明大學<br>公共衛生研究所<br>102<br>Binary clustered data are often encountered in public health and clinical research. Difference analyses methods can obtain different results of parameter estimates. Intraclass correlation coefficient (ICC) usually is used to quantify the degree of relation in outcomes within cluster. The ICCs are not necessarily substantial in longitudinal or clustered data after adjusting for related variables. The effects of ICC, prevalence of outcome variable, number of clusters and cluster size on parameter estimates remain to be explored. The present study carried out a s

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25

葉家豪. "nterval Estimation and Sample Size Calculation for Fisher Transformation of Intraclass Correlation Coefficient." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/7d84zz.

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碩士<br>國立交通大學<br>管理科學系所<br>101<br>ICCs is an indispensable part of social science research, it has to use the F-distribution through the computing process, it seems pretty hard to find the optimal sample size in some specific situations, so the domestic and foreign researchers have debated on the ICCs estimator for many years. Mostly, researchers choose to use the normal distribution because the normal distribution is relatively easy to use to find the confidence interval and optimal sample size. This article is based on the theory which proposed by Bonett (2002) , he used the formula to compu

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26

Tsai, Lin-Su, and 蔡麗淑. "Using Intraclass Correlation Coefficient to Assess Effects of the Hospital Global Budget Payment System in Taiwan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/5599r6.

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碩士<br>嘉南藥理科技大學<br>醫務管理系<br>100<br>Objectives: Using a common indicator to assess effects on hospital global budget payment system implemented in 2002 in Taiwan is urgently required. We present the intraclass correlation coefficient (ICC) to assess how well Taiwan constrained hospital-provided medical services in such a system, and compare what difference existed in the two sections of inpatient and outpatient in Taiwan’s hospitals Methods: Data from 1999 to 2009 regarding 421 hospital inpatient and outpatient medical reimbursements to Taiwan’s Bureau of National Health Insurance (BNHI) were us

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Nolte, Catharina. "Validität und Reliabilität eines Instruments zur Messung der Qualität der Kommunikation und seine Eignung im studentischen Unterricht." Doctoral thesis, 2014. http://hdl.handle.net/11858/00-1735-0000-0022-5F1C-B.

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Fragestellung und Zielsetzung: Ausgehend von dem Ziel, kommunikative Fähigkeiten von Studierenden der Humanmedizin objektiv zu messen, sollte in dieser Studie untersucht werden, ob eine ins Deutsche übersetzte Kurzversion des „Calgary-Cambridge Observation Guide for the Medical Interview“ (CCOG) von Kurtz und Silverman (1996) valide und reliabel ist und sich damit die Kommunikationsfähigkeit von Studierenden der Medizin bewerten lässt. Methode: Eine Auswahl von Ärzten, wissenschaftlichen Mitarbeitern und Studierenden des klinischen Studienabschnittes evaluierten im Abstand von mindestens drei

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"Determining Appropriate Sample Sizes and Their Effects on Key Parameters in Longitudinal Three-Level Models." Doctoral diss., 2016. http://hdl.handle.net/2286/R.I.40260.

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abstract: Through a two study simulation design with different design conditions (sample size at level 1 (L1) was set to 3, level 2 (L2) sample size ranged from 10 to 75, level 3 (L3) sample size ranged from 30 to 150, intraclass correlation (ICC) ranging from 0.10 to 0.50, model complexity ranging from one predictor to three predictors), this study intends to provide general guidelines about adequate sample sizes at three levels under varying ICC conditions for a viable three level HLM analysis (e.g., reasonably unbiased and accurate parameter estimates). In this study, the data generating p

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Shih, Tse-Hua. "Adequate sample sizes for viable 2-level hierarchical linear modeling analysis : a study on sample size requirement in HLM in relation to different intraclass correlations /." 2008. http://wwwlib.umi.com/dissertations/fullcit/3302215.

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