Fig. 1From: Simulation-based power calculations for planning a two-stage individual participant data meta-analysisSimulation-based power estimates (based on 10,000 replications) for the planned IPD fixed effect meta-analysis* of either 14, 15 or 24 trials for detecting a treatment-BMI interaction effect (λ), across a range of values. * Based on using change score model (4) in each trial followed by fixed effect meta-analysis model (9)Back to article page