Isosorbide dinitrate plus hydralazine (ID+H) v placebo for heart failure (HF) in black patients at mean 10 months*

OutcomesID + HPlacebo95% CI for the difference
*QOL  =  quality of life. Lower scores indicate better quality of life. Other abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article.
†Composite score (weighted values for all cause death, first hospital admission for HF during 18 mo follow up, and change in quality of life at 6 mo) ranged from −6 to +2, with higher scores indicating better outcome.
Mean composite score†−0.1−0.50.16 to 0.64
Mean QOL score change at 6 mo−5.6−2.70.37 to 5.4
All cause death6.2%10%39% (7.7 to 60)26 (14 to 150)
First hospital admission for HF16%24%33% (14 to 47)13 (8 to 32)