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Risk ratios (RRs) for the efficacy outcomes of HF decompensation and all-cause mortality, HF decompensation, all-cause mortality, and NYHA class improvement. Solid squares represent RRs in trials and have a size proportional to the number of events. The 95% confidence intervals (CI) for individual trials are denoted by lines and those for the pooled RRs by empty diamonds. HF, heart failure; NYHA, New York Heart Association.
