| GI (Vitamin D group) (n =40) | GII (Placebo group) (n =40) | P value |
Duration of stimulation (days), mean ± SD | 13.4 ± 1.3 | 13.6 ± 1.6 | >0.05 |
Dose of gonadotrophins (IU), mean ± SD | 3982.1 ± 1371.9 | 4070.3 ± 1393.7 | >0.05 |
N. of oocytes retrieved, mean ± SD | 12.3 ± 1.4 | 13.6 ± 1.7 | >0.05 |
Endometrial thickness, mean ± SD | 10.2 ± 2.4 | 10.7 ± 2.9 | >0.05 |
Fertilization rate, n (%) | 87.6% | 85.9% | >0.05 |
Embryo quality, n (%) A & B C & D |
73.4% 26.6% |
77.1% 22.9% |
>0.05 |