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Figure 1 Proportional effect of ACEi therapy on 30-day mortality in the presence and absence of concomitant ASA. The odds ratio for each trial is represented by a square (area proportional to number of patients with an event), with 99% CI (horizontal line). The overall results for the trials and their 95% CI are represented by diamonds. ACEi = angiotensin-converting enzyme inhibitor; ASA = aspirin; CI = confidence intervals.
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