Figure 3.

Power of FE, RE, and Our New RE Method in a Simulation Varying Between-Study Heterogeneity

We simulate various settings of the number of studies and sample size. The x axis denotes heterogeneity k, where we simulate the standard deviation of the effect size (log odds ratio) to be k times the effect size. We assume the mean odds ratio of 1.3 for five studies and 1.2 for ten studies. When we assume equal sample sizes, we use the sample size of 1000. When we assume unequal sample sizes, we use the sample sizes of 400, 800, …, 2000 for five studies and 200, 400, …, 2000 for ten studies.