Table 1.
Clinical characteristics of the participants and comparisons between groups according to the achievement of clinical pregnancy.
| Clinical characteristics | Pregnant group (N=89) | Non-pregnant group (N=61) | P-value |
|---|---|---|---|
| Age (years) | 30 (27–31) | 30 (27.5–32) | 0.773 |
| BMI (kg/m2) | 21.94±2.78 | 21.49±2.65 | 0.409 |
| AMH (ng/ml) | 2.37 (1.53–4.02) | 2.84 (1.58–4.01) | 0.560 |
| Duration of infertility (years) | 2 (1–4) | 3 (1–5) | 0.156 |
| Cause of infertility (n) | |||
| Tubal factor | 59 | 44 | 0.449 |
| Ovulatory disorder | 18 | 14 | 0.689 |
| Endometriosis | 11 | 5 | 0.417 |
| Unexplained | 2 | 1 | 1.000 |
| Male factor | 31 | 27 | 0.244 |
| Gravity | |||
| No | 57 | 32 | 0.156 |
| Yes | 32 | 29 | |
| Parity | |||
| No | 83 | 54 | 0.311 |
| Yes | 6 | 7 | |
| Hormone stimulation | |||
| GnRH-antagonist protocol | 40 | 33 | 0.639 |
| Luteal phase short-acting long protocol | 30 | 18 | |
| Follicular phase long-acting long protocol | 14 | 10 | |
| Prolonged protocol | 3 | 0 | |
| Ministimulation protocol | 1 | 0 | |
| Flare-up protocol | 1 | 0 | |
| E2 on the HCG-day (pg/ml) | 1,996.2 (1,302.8–2,777.7) | 2,200.7 (1,721.2–2,806.2) | 0.188 |
| Retrieved oocytes (n) | 8 (6–12) | 8 (6–11) | 0.319 |
| IVF or IVF-ICSI | |||
| IVF | 67 | 46 | 0.986 |
| IVF-ICSI | 22 | 15 | |
| Endometrial thickness (cm) | 1.1 (1.0–1.2) | 1.1 (0.95–1.2) | 0.639 |
| ET | |||
| SET | 8 | 6 | 0.861 |
| DET | 81 | 55 | |
Values are expressed as median (25–75 interquartile range), mean ± SD, and number.
AMH, anti-Müllerian hormone; IVF, in vitro fertilization; ICSI, intracytoplasmic sperm injection; ET, embryo transfer; SET, single embryo transfer; DET, double embryo transfer; GnRH, gonadotropin-releasing hormone; E2, estradiol.