This abstract discusses how to calculate power for three types of treatment heterogeneity including 1) the variability in treatment effects across sites, 2) site-specific treatment effects, and 3) moderator effects at the cluster ...
Abstract Background Prior research has focused primarily on empirically estimating design parameters for cluster-randomized trials (CRTs) of mathematics and reading achievement. Little is known about how design parameters compare across ...
This software includes a series of empirical estimates of plausible parameter values for determining the minimum effect size that can be detected by a given number, size, and treatment/group mix of randomized groups.
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