Table 1.
Baseline patient and treatment characteristics of studied IVF cycles resulting in clinical pregnancy and nonpregnancy.
| Variable | Overall group | Nonpregnant | Pregnant | P valuea |
|---|---|---|---|---|
| (n = 129) | (n = 114) | (n = 15) | ||
| Age (y) | 37.0 ± 3.7 | 37.3 ± 3.7 | 35.0 ± 3.6 | 0.043 |
| BMI (kg/m2) | 23.9 ± 3.8 | 24.0 ± 3.9 | 23.5 ± 2.0 | 0.976 |
| AFC | 6.6 ± 3.7 | 6.4 ± 3.6 | 8.1 ± 4.3 | 0.134 |
| AMH (pmol/L) | 3.0 ± 1.7 | 3.0 ± 1.7 | 3.5 ± 1.9 | 0.246 |
| DHEAS (μmol/L) | 4.5 ± 1.9 | 4.3 ± 1.8 | 5.9 ± 2.2 | 0.005 |
| FSH (IU/L) | 9.7 ± 6.7 | 9.8 ± 7.1 | 9.1 ± 3.2 | 0.752 |
| LH (IU/L) | 4.6 ± 2.2 | 4.7 ± 2.3 | 4.5 ± 1.6 | 0.755 |
| E 2 (pmol/L) | 223 ± 123 | 223 ± 123 | 224 ± 102 | 0.823 |
| T (nmol/L) | 1.4 ± 0.7 | 1.4 ± 0.6 | 2.3 ± 1.0 | 0.273 |
| Duration of stimulation (d) | 10.3 ± 1.9 | 10.3 ± 1.9 | 10.5 ± 0.8 | 0.688 |
| Total gonadotrophins used (IU) | 3095.5 ± 553.6 | 3089.5 ± 582.4 | 3140 ± 250.1 | 0.741 |
| Number of ICSI cycles, % (n/N) | 75.0 (81/108) | 75.3 (70/93) | 73.3 (11/15) | 0.540 |
Note: values are presented as mean ± SD. AFC: antral follicle count; AMH: anti-Müllerian hormone; BMI: body mass index. Conversion formulas for the AMH, DHEAS, E 2, and T values in mass units are as follows: ng/mL = pmol/L: 7.14, μg/dL × 0.027 = μmol/L, pg/mL × 3.67 = pmol/L, and ng/dL × 0.0347 = mmol/L.
apregnant versus nonpregnant.