Table 3 Pregnancy outcomes stratified by ovulation induction method for maternal aged< 35 years old
| Characteristic | Natural cycle (n = 1286) | one growth follicle in HMG cycle (n = 1201) | two growth follicles in HMG cycle (n = 214) | one growth follicle vs. natural P value OR (95%CI) | two growth follicles vs. natural P value OR (95%CI) |
|---|---|---|---|---|---|
| Clinical pregnancy | 93(7.23%) | 124(10.32%) | 29(13.55%) | 0.007 1.48 (1.11–1.96) | 0.002 2.01 (1.29–3.14) |
| Live birth | 76(5.91%) | 94(7.83%) | 22(10.28%) | 0.06 1.35 (0.99–1.85) | 0.018 1.82 (1.11–3.00) |
| Intrauterine Pregnancy | 90 | 118 | 28 | ||
| Miscarriage | 12(13.33%) | 23 (19.49%) | 6(21.43%) | 0.033 (1.060–3.891) | 0.181 (0.730–5.310) |
| Ectopic pregnancy | 3(3.23%) | 6(4.84%) | 3(10.34%) | 0.558 (0.371–6.266) | 0.142 (0.659–18.182) |
| Twin pregnancy | 0 | 1(0.81%) | 6(20.69%) | 1.0 | 0 |