Table 1.
Demographic characteristics of patient (n = 570)
| 2 h (n = 281) | 18 h (n = 289) | p | |
|---|---|---|---|
| Maternal age | 32.28 ± 4.33 | 31.80 ± 4.35 | 0.114 |
| Duration of stimulation (days) | 10.43 ± 2.25 | 10.16 ± 2.15 | 0.151 |
| Total dose gonadotropin per cycle | 2039.01 ± 703.16 | 1991.44 ± 968.72 | 0.503 |
| Baseline FSH | 8.20 ± 3.35 | 8.11 ± 3.34 | 0.751 |
| Baseline LH | 4.68 ± 3.02 | 4.89 ± 3.51 | 0.427 |
| Endometrial thickness on hCG day (mm) | 11.52 ± 2.47 | 11.78 ± 2.77 | 0.236 |
| Duration of infertility (years) | 5.27 ± 3.58 | 4.88 ± 3.24 | 0.172 |
| BMI | 21.14 ± 2.52 | 21.02 ± 2.81 | 0.585 |
| Mean no. of oocytes | 10.55 ± 5.42 | 10.29 ± 5.61 | 0.583 |
| Embryo transfer number | 2.25 ± 0.55 | 2.18 ± 0.56 | 0.157 |
| Rate of GnRHa long protocol | 90.75 % | 87.20 % | 0.177 |
| Rate of recurrent abortions | 1.78 | 1.73 | 0.964 |
| Etiology | |||
| Tubal factor (%) | 140 (49.82) | 153 (52.94) | 0.456 |
| Endometriosis (%) | 10 (3.56) | 5 (1.73) | 0.173 |
| Male factor (%) | 16 (5.67) | 17 (5.88) | 0.923 |
| Unexplained (%)a | 4 (1.42) | 2 (0.69) | – |
| Mixed factor (%) | 109 (38.79) | 107 (37.02) | 0.664 |
| Ovulation dysfunction (%) | 2 (0.71) | 5 (1.73) | 0.451 |
aThere is no statistical analysis because the statistics of the two groups are less than 5