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. 2009 Jan 12;9:2. doi: 10.1186/1471-2288-9-2

Figure 4.

Figure 4

Measures of absolute bias, coverage probabilities, MSE and variance of the predicted effect for meta-analyses simulated to have 30 studies, an underlying OR of 3 (lnOR = 1.1) and no PB alongside increasing levels of heterogeneity (PB situation 1).