Frequency | % | Missing | N | |
---|---|---|---|---|
Oral contraceptive pill | 322 | 65.3 | 171 | 493 |
Pharmaceuticals: ovulation induction, anti-androgens hypoglycaemics etc | 309 | 62.7 | 184 | 493 |
Ovarian stimulation as part of an IVF cycle | 58 | 11.8 | 435 | 493 |
Surgery | 49 | 9.9 | 444 | 493 |
No medical treatment | 10 | 2 | 483 | 493 |