Patterns of intra-cluster correlation from primary care research to inform study design and analysis.


OBJECTIVE To provide information concerning the magnitude of the intraclass correlation coefficient (ICC) for cluster-based studies set in primary care. STUDY DESIGN AND SETTING Reanalysis of data from 31 cluster-based studies in primary care to estimate intraclass correlation coefficients from random effects models using maximum likelihood estimation… (More)


  • Presentations referencing similar topics