Randomized trial examines sample size requirements for intervention trials using cluster randomization, suggesting needed statistical adjustments.
Sample size requirements are given for intervention trials in which the unit of randomization is the cluster. Cases dealt with include the comparison of two means and the comparison of two proportions. Required modifications to the standard statistical analyses are also discussed.
No takes yet. Share an insight, caveat, or question.
Donner et al. (1981) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: