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.
Cohort versus cross-sectional design in large field trials: Precision, sample size, and a unifying model
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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.