Click on image to view larger version.

Figure 2 Effect of angiotensin-converting enzyme inhibitors on mortality in male and female patients with heart failure (random effects pooled estimate). For each study, the size of the box is proportional to the sample size, and the lines denote the 95% confidence interval. For the combined result, the ends of the diamond shape denote the 95% confidence interval. Trial acronyms defined in Abbreviation Box.