Table 1.
Conditional logistic regression estimates of the coefficient of the log of time since first intercourse, truncated at age 45.
| Confounders controlled for | Coefficient | 95% CI |
|---|---|---|
| Stratifying variables (age, centre) only | 1.95 | 1.76–2.15 |
| Reproductive age1 | 1.93 | 1.73–2.13 |
| Oral contraceptive use | 1.96 | 1.76–2.16 |
| Delay between first intercourse and first full-term pregnancy | 1.92 | 1.72–2.12 |
| Number of full-term pregnancies | 1.61 | 1.40–1.81 |
1
Years between menarche and current age or menopause, whichever came first.
CI = confidence interval