Quantifying Power and Bias in Cluster Randomized Trials Using Mixed Models vs. Cluster-Level Analysis in the Presence of Missing Data: A Simulation Study

In cluster randomized trials (CRTs), groups are randomized to treatment arms rather than individuals while the outcome is assessed on the individuals within each cluster. Individuals within clusters tend to be more similar than in a randomly selected sample, which poses issues with dependence, which...

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Bibliographic Details
Main Author: Vincent, Brenda
Other Authors: Bell, Melanie
Published: The University of Arizona. 2016
Online Access:http://hdl.handle.net/10150/613376