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Fig. 4 | Trials

Fig. 4

From: Minimum number of clusters and comparison of analysis methods for cross sectional stepped wedge cluster randomised trials with binary outcomes: A simulation study

Fig. 4

Power to detect the true intervention effect using a GLMM with and without adjustment for time. Estimates are obtained from fitting model (1) with and without time as a covariate. Simulated data have three steps, a cell size equal to n jk , a true intervention effect odds ratio of 2.25 and a time effect odds ratio of 1. Both models shown maintained a type I error rate of approximately 5%

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Trials

ISSN: 1745-6215