Table 1.
Demographic data related to pregnant and nonpregnant patients.
| Characteristic | Clinical pregnancy(n = 142) | Nonpregnancy(n = 788) | P-value |
|---|---|---|---|
| Female age (years) | 32.0 (29.8–35.0) | 33.0 (31.0–36.0) | 0.008 |
| FSH (IU/L) | 6.90 (5.90–8.00) | 7.00 (5.95–8.30) | 0.378 |
| LH (IU/L) | 4.40 (3.40–6.25) | 4.40 (3.30–6.00) | 0.544 |
| E2 (pmol/mL) | 154.5 (109.3–186.8) | 137.0 (103.0–181.0) | 0.185 |
| Type of infertility | |||
| Primary | 73 (13.4%) | 471 (86.6%) | 0.063 |
| Secondary | 69 (17.9%) | 317 (82.1%) | |
| Cause of infertility | |||
| Unexplained | 79 (13.9%) | 491 (86.1%) | 0.133 |
| PCOS | 63 (17.5%) | 297 (82.5%) | |
| Duration of infertility (years) | 2.0 (1.0–3.0) | 2.0 (1.0–3.0) | 0.956 |
| Total dose of gonadotropins (IU) | 636.0 (450.0–856.3) | 600.0 (412.5–784.0) | 0.008 |
| No. of preovulatory follicles | 1.0 (1.0–2.0) | 1.0 (1.0–2.0) | 0.126 |
| EMT (mm) | 9.15 (7.50–10.63) | 8.70 (7.40–10.00) | 0.039 |
Results are expressed as median with interquartile range or number (percentile).
FSH, follicle-stimulating hormone; LH, luteal hormone; E2, estradiol; PCOS, polycystic ovarian syndrome; EMT, endometrial thickness.