Power Calculation for Cross-Sectional Stepped Wedge Cluster Randomized Trials with Variable Cluster Sizes

Standard sample size calculation formulas for stepped wedge cluster randomized trials (SW-CRTs) assume that cluster sizes are equal. When cluster sizes vary substantially, ignoring this variation may lead to an under-powered study. We investigate the relative efficiency of a SW-CRT with varying clus...

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Bibliographic Details
Published in:Biometrics
Main Authors: Harrison, Linda J, Chen, Tom, Wang, Rui
Format: Artigo
Language:Inglês
Published: 2019
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Article
Online Access:https://ncbi.nlm.nih.gov/pmc/articles/PMC7165039/
https://ncbi.nlm.nih.gov/pubmed/31625596
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1111/biom.13164
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