Table 2.
Demographic data according to dose of gonadotropins administered.
| Characteristic | Total dose of gonadotropins |
P-value | |||
|---|---|---|---|---|---|
| <450 IU (n = 232) | 450–599 IU (n = 216) | 600–749 IU (n = 188) | ≥750 IU (n = 294) | ||
| Female age (years) | 32.5 (30.0–35.0) | 34.0 (31.0–36.0) | 33.0 (31.0–36.0) | 33.0 (30.0–36.0) | 0.124 |
| FSH (IU/L) | 7.10 (6.10–8.00) | 6.90 (5.85–8.55) | 7.10 (6.10–8.25) | 6.80 (5.80–8.40) | 0.772 |
| LH (IU/L) | 4.40 (3.50–5.80) | 4.40 (3.30–5.75) | 4.50 (3.30–6.10) | 4.20 (3.30–6.90) | 0.882 |
| E2 (pmol/mL) | 146.0 (108.0–182.5) | 151.0 (106.0–181.8) | 132.5 (107.3–177.0) | 125.5 (84.0–180.3) | 0.001 |
| Type of infertility | |||||
| Primary | 148 (63.8%) | 135 (62.5%) | 108 (57.4%) | 153 (52.0%) | 0.026 |
| Secondary | 84 (36.2%) | 81 (37.5%) | 80 (42.6%) | 141 (48.0%) | |
| Cause of infertility | |||||
| Unexplained | 150 (64.7%) | 142 (65.7%) | 125 (66.5%) | 153 (52.0%) | 0.001 |
| PCOS | 82 (35.3%) | 74 (34.3%) | 63 (33.5%) | 141 (48.0%) | |
| Duration of infertility (years) | 2.0 (1.0–3.0) | 2.0 (1.0–3.0) | 2.0 (1.0–3.0) | 2.0 (1.0–3.0) | 0.325 |
| No. of preovulatory follicles | 1.0 (1.0–2.0) | 1.0 (1.0–2.0) | 1.0 (1.0–2.0) | 1.0 (1.0–2.0) | 0.004 |
| EMT (mm) | 8.00 (7.00–9.30) | 8.70 (7.13–10.00) | 9.00 (7.70–10.28) | 9.10 (8.00–10.83) | <0.001 |
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.