| Characteristic | Fatemi et al. 2006 | Ceyhan et al. 2008 | Kwon et al. 2013 | Ismail Madkour et al. 2016 | |||||||||
| P | P+E | p-value | P | P+E | p-value | P | P+E | p-value | P | P+E | p-value | ||
| No. of patients | 100 | 101 | - | 29 | 30 | - | 55 | 55 | - | 110 | 110 | - | |
| Age of patients (y) | 32.05±3.66 | 32.03±3.55 | NS | 30.9±3.5 | 31.4±2.6 | 0.14 | 37.3±3.6 | 36.7±3.5 | NS | 30.23±4.13 | 31.11±3.23 | 0.07 | |
| Infertility duration (m) | - | - | - | - | - | - | 48.5±24.5 | 45.3±26.8 | NS | 5.51±0.60 | 5.39±0.61 | 0.1 | |
| Body mass index (kg/m2) | 22.7±2.76 | 22.0±2.82 | NS | 22.5±1.3 | 22.9±21.3 | 0.16 | 21.8±1.9 | 21.6±2.0 | NS | 22.51±6.42 | 21.97±5.74 | 0.5 | |
| No. of oocytes | 12.3±7.40 | 11.9±6.15 | NS | 10.2±3.5 | 12.0±3.6 | 0.20 | 12.8±2.6 | 13.1±3.0 | NS | 11.6±2.34 | 12.2±2.28 | 0.6 | |
| Basal serum FSH (mIU/L) | <10 | <10 | - | 5.6±1.1 | 5.2±1.1 | 0.14 | 7.2±1.9 | 7.0±2.0 | NS | 6.41±2.42 | 6.25±2.98 | 0.7 | |
| EI*% | Male factor | 61 | 62.4 | NS | 6.9 | 13.3 | - | 36.4 | 34.5 | NS | 58.2 | 56.4 | 0.9 |
| Tubal/ peritoneal | 22 | 19.8 | NS | 13.8 | 30.0 | - | 40.0 | 38.2 | NS | 24.5 | 21.8 | 0.6 | |
| Others | 4 | 4 | NS | - | - | - | 10.9 | 12.7 | NS | - | - | - | |
| Unexplained | 13 | 13.9 | NS | 79.3 | 56.7 | NS | 12.7 | 14.5 | NS | - | - | ||
| Values are presented as mean ± SD or number (%); E2, estradiol; P, progesterone; FSH, follicle-stimulating hormone; NS, not significant; * Etiology of infertility; - Values awaiting in their articles |
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