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Figure 2 Stratified comparisons of angiotensin receptor blockers (ARB) on all-cause mortality: ARB versus placebo, ARB versus angiotensin-converting enzyme inhibitors (ACEI) and ARB-ACEI combination versus ACEI. Odds ratios (OR) and the 95% confidence intervals (CI) are shown on a logarithmic scale, with box size proportional to the sample size. In each stratum, the diamond represents the pooled effect. Acronyms as in Abbreviations and Acronyms box.