Table 1.
Demographic and cycle characteristics of the 2 groups.
| Characteristics | Study group (n=311) | Control group (n=213) | P-value |
|---|---|---|---|
| Maternal age at cycle start (y)* | 30.37±4.36 | 29.94±3.74 | 0.5159 |
| infertility duration(y) | 4.30±3.15 | 3.99±3.01 | 0.1392 |
| BMI (Kg/m2)* | 22.14±2.89 | 22.05±2.81 | 0.8072 |
| D2 FSH (mIU/ml) | 7.24±3.51 | 7.52±3.25 | 0.0804 |
| D2 E2 (pmol/l) | 47.06±41.60 | 59.92±66.23 | 0.2156 |
| D2 P (ng/ml) | 0.77±1.01 | 0.84±0.75 | 0.8754 |
| D2 LH(mIU/ml) | 4.89±3.76 | 4.86±2.15 | 0.4350 |
| Total Gn dose administered | 2845.22±1082.62 | 3025.89±1002.08 | 0.0464 |
| Days of Gn | 13.77±2.32 | 13.86±2.48 | 0.8098 |
| E2 on initiation day (pmol/l) | 8.92±6.74 | 26.71±170.69 | <0.0001 |
| LH on initiation day (mIU/ml) | 0.64±0.39 | 0.57±0.59 | 0.0007 |
| FSH on initiation day (mIU/ml) | 3.56±1.91 | 4.07±1.68 | 0.0021 |
| P on initiation day (ng/ml) | 0.47±0.23 | 0.45±0.25 | 0.5842 |
| Endometrial thickness (mm) | 12.60±2.66 | 13.08±2.82 | 0.0465 |
| E2 on day hCG (pmol/l) | 3338.14±2093.43 | 3803.20±2426.87 | 0.049 |
| LH on day hCG (mIU/ml) | 1.22±1.39 | 0.74±0.55 | 0.0026 |
| P on day hCG (ng/ml) | 1.05±0.67 | 1.03±0.68 | 0.3228 |
| Dominant follicles ratio, % | 79.79 | 82.88 | 0.0045 |
*
t-test, the else Wilcoxon rank sum test; values are mean ±SD or n (%);
NS – not statistically.