Figure 3

Cumulative meta-analysis from figure 2 with indicators of sufficiency (failsafe ratio) and stability (cumulative slope). 1. SMD = standardised mean difference (hedges g). 2. The cumulative SMD and 95% CI shown in this figure are exactly the same as those shown in figure 2. 3. Threshold for sufficiency > 1 (shown by red dashed line), not achieved in this cumulative meta-analysis. 4. Criteria for stability < 0.005, achieved in this cumulative meta-analysis after inclusion of Wu