Estimating intra-cluster correlation coefficients for planning longitudinal cluster randomized trials: a tutorial.
Sign Up to like & getrecommendations! Published in 2023 at "International journal of epidemiology"
DOI: 10.1093/ije/dyad062
Abstract: It is well-known that designing a cluster randomized trial (CRT) requires an advance estimate of the intra-cluster correlation coefficient (ICC). In the case of longitudinal CRTs, where outcomes are assessed repeatedly in each cluster over… read more here.
Keywords: correlation structures; cluster correlation; cluster; correlation ... See more keywords
A readily available improvement over method of moments for intra-cluster correlation estimation in the context of cluster randomized trials and fitting a GEE–type marginal model for binary outcomes
Sign Up to like & getrecommendations! Published in 2019 at "Clinical Trials"
DOI: 10.1177/1740774518803635
Abstract: Background/aims Cluster randomized trials are popular in health-related research due to the need or desire to randomize clusters of subjects to different trial arms as opposed to randomizing each subject individually. As outcomes from subjects… read more here.
Keywords: correlation coefficient; correlation; cluster; cluster correlation ... See more keywords
Use of information criteria for selecting a correlation structure for longitudinal cluster randomised trials
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DOI: 10.1177/17407745221082227
Abstract: Background: When designing and analysing longitudinal cluster randomised trials, such as the stepped wedge, the similarity of outcomes from the same cluster must be accounted for through the choice of a form for the within-cluster… read more here.
Keywords: information; structure; cluster correlation; correlation structure ... See more keywords
Intra-cluster correlation coefficients in primary care patients with type 2 diabetes and hypertension
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DOI: 10.1186/s13063-020-04349-4
Abstract: Introduction There are few sources of published data on intra-cluster correlation coefficients (ICCs) amongst patients with type 2 diabetes (T2D) and/or hypertension in primary care, particularly in low- and middle-income countries. ICC values are necessary… read more here.
Keywords: icc values; primary care; hypertension; care ... See more keywords