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Fig. 1 | Trials

Fig. 1

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. 1

Per cent bias in the intervention effect estimate \( \left({\widehat{\beta}}_1\right) \) for models that fail to adjust for time. Estimates are obtained from fitting models (1) to (4) without the time effect. 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 1.227

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Trials

ISSN: 1745-6215