Oestrogen plus progestogen hormone therapy (HT) v placebo for incidence of breast cancer in postmenopausal women at mean 5.6 years†
| Outcomes | Cases of breast cancer | Hazard ratio (95% CI) | |
|---|---|---|---|
| HT | Placebo | ||
| †CI defined in glossary. | |||
| All breast cancer | 245 | 185 | 1.24 (1.02 to 1.50) |
| Invasive breast cancer | 199 | 150 | 1.24 (1.01 to 1.54) |
| In situ breast cancer | 47 | 37 | 1.18 (0.77 to 1.82) |