Table 5 Pregnancy outcomes stratified by ovulation induction method for women≥35 years old
| Characteristic | Natural cycle (n = 430) | One growth follicle in HMG cycle (n = 368) | Two growth follicles in HMG cycle (n = 74) | One growth follicle vs. natural P value OR (95% CI) | Two growth follicles vs. natural P value OR (95% CI) |
|---|---|---|---|---|---|
| Clinical pregnancy | 34 (7.91%) | 29 (7.88%) | 4 (5.41%) | 0.988 0.996 (0.595–1.670) | 0.454 0.665 (0.229–1.933) |
| Live birth | 29 (6.74%) | 18 (4.89%) | 2 (2.70%) | 0.270 0.711 (0.388–1.302) | 0.197 0.384 (0.090–1.645) |
| Intrauterine Pregnancy | 50 | 16 | 66 | ||
| Miscarriage | 4 (11.76%) | 11 (37.93%) | 1 (33.33%) | 0.020 4.58 (1.27–16.57) | 0.322 3.750 (0.27–51.37) |
| Ectopic pregnancy | 0 (0) | 0 (0) | 1 (25%) | ||
| Twin pregnancy | 0 | 0 | 0 |