Exposure* | Cases n | Controls n | OR (95% CI)† |
---|---|---|---|
Hormone replacement therapy (HRT) | |||
Never | 38 | 58 | Referent |
Past | 40 | 73 | 0.7 (0.4 – 1.3) |
Current use on reference date | 23 | 41 | 1.0 (0.4 – 2.2) |
Years of HRT use | |||
Never | 38 | 58 | Referent |
Up to 5 years | 28 | 43 | 0.9 (0.4 – 1.7) |
More than 5 years | 32 | 65 | 0.9 (0.5 – 1.7) |
First HRT exposure relative to reference date | |||
Never | 38 | 58 | Referent |
1–9 years before | 30 | 44 | 0.9 (0.4 – 1.9) |
10 or more years before | 31 | 62 | 0.9 (0.5 – 1.6) |
Type of HRT preparation | |||
None | 38 | 58 | Referent |
Estrogen | 33 | 66 | 0.9 (0.5 – 1.6) |
Estrogen and Progestin | 24 | 33 | 1.3 (0.6 – 2.8) |