In between centres mortality variability
Figure 3 depicts the overall in between centres variability and pooled mortality proportion for MetS (4%, (95% CI: 2%, 6%)) and no-MetS (2%, (95% CI: 1%, 3%)). Moderate heterogeneity was observed in the MetS group, however, studies with higher weight (n=3, 5, 7) showed similar magnitude and direction of the effect size.