Female age
Fertility is decreased in proportion to a woman’s age
| Age | Subfertility (%) |
| ≤ 30 | 25 |
| 30–35 | 33 |
| 35–40 | 50 |
| ≥ 40 | > 90 |
Fertility is decreased in proportion to a woman’s age
| Age | Subfertility (%) |
| ≤ 30 | 25 |
| 30–35 | 33 |
| 35–40 | 50 |
| ≥ 40 | > 90 |
