Table 3.
Never hormone use | 1–5 yr | 6–10 yr | >10 yr | |
---|---|---|---|---|
No. of cases | 1,102 | 1,472 | 1,055 | 1,796 |
Person-years | 342,572 | 355,609 | 246,414 | 352,569 |
Age-adjusted, HR (95% CI) | Reference | 1.34 (1.24–1.45) | 1.29 (1.19–1.41) | 1.36 (1.26–1.47) |
Multivariate,a HR (95% CI) | Reference | 1.33 (1.23–1.44) | 1.29 (1.18–1.41) | 1.33 (1.22–1.44) |
CI, confidence interval; HR, hazard ratio.
Adjusted for age, vigorous activity, alcohol intake, smoking, aspirin use, other nonsteroidal anti-inflammatory drug use, body mass index and calorie intake, age at menarche, parity, age at menopause, time since menopause, type of menopause, past use of oral contraceptives, dietary intake of fiber and red meat, and Alternative Healthy Eating Index score.