A tutorial that consolidates power and sample size formulas for testing treatment effect heterogeneity in cluster-randomized trials across multiple designs and supplies an online R Shiny calculator.
Sample size for cluster randomized trials: effect of coefficient of variation of cluster size and analysis method
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A tutorial on conducting sample size and power calculations for detecting treatment effect heterogeneity in cluster randomized trials with linear mixed models
A tutorial that consolidates power and sample size formulas for testing treatment effect heterogeneity in cluster-randomized trials across multiple designs and supplies an online R Shiny calculator.