Time since last birth and risk of non-epithelial ovarian cancer by subtype
| Sex cord-stromal tumors | Germ cell tumors | |||
|---|---|---|---|---|
| Time since last birth (years) | OR | 95% CI | OR | 95% CI |
| <10 | 0.78 | 0.40–1.53 | 0.81 | 0.23–2.78 |
| 10–20 | 0.70 | 0.39–1.25 | 0.76 | 0.24–2.48 |
| 20–30 | 0.97 | 0.60–1.56 | 0.61 | 0.21–1.81 |
| ≥30 | 1.00 | Ref | 1.00 | Ref |
| Per year | 1.04 | 1.01–1.06 | 0.99 | 0.96–1.02 |