Fig 2. Extracted hazard ratios for female gender regarding risk of appropriate shocks with 95% confidence intervals as reported in the respective publications.

‘PP’ indicates that the results were re-analyzed for primary prevention patients only. The pooled estimate is reported with a Knapp-Hartung adjusted 95% confidence interval. The dotted vertical line denotes a hazard ratio of 1, which corresponds to no difference in the risk between males and females.