|Outcomes at mean 5.6 years||Oest + Prog||Placebo||Hazard ratio (95% CI)|
|*CI defined in glossary.|
|Cases of breast cancer (all)||245||185||1.24 (1.02 to 1.50)|
|Cases of invasive breast cancer||199||150||1.24 (1.01 to 1.54)|
|Cases of in situ breast cancer||47||37||1.18 (0.77 to 1.82)†|
Oestrogen plus progestogen increased risk of breast cancer in postmenopausal women
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