Oestrogen plus progestin (Oest + Prog) v placebo for the composite end point of coronary heart disease (CHD) death or nonfatal myocardial infarction in postmenopausal women with CHD

Events/1000 person y
Follow upOest + ProgPlaceboAdjusted relative hazard (95% CI)‡NNT
†Abbreviations defined in glossary.
‡Relative hazard calculated using a Cox proportional hazards model with intention to treat analyses and adjusted for some demographic and baseline characteristics.
4.1 y34.034.30.96 (0.78 to 1.18)Not significant
4.1–6.8 y41.842.10.98 (0.75 to 1.22)Not significant
6.8 y36.636.80.97 (0.82 to 1.14)Not significant