| Progesterone on hCG day ≤1.5 ng/ml (n = 248) | Progesterone on hCG day >1.5 ng/ml (n = 54) | P value |
Retrieved oocytes No. | 10.79 ± 1.23 | 15.81 ± 1.56 | 0.000* |
Retrieved M II oocytes No. | 6.86 ± 1.51 | 8.93 ± 2.57 | 0.000* |
Maturation rate % (M II/oocytes retrieved) | 63.6 ± 14.1 | 56.5 ± 14.0 | 0.000* |
Fertilized oocytes No. | 4.56 ± 0.69 | 5.29 ± 1.27 | 0.000* |
Fertilization rate % (Fertilized/M II retrieved) | 66.5 ± 14.1 | 59.3 ±17.9 | 0.002* |
Cleaved embryos No. | 4.48 ± 0.66 | 4.89 ± 1.15 | 0.000* |
Embryos cleavage rate % (Cleaved/fertilized) | 98.2 ± 0.7 | 92.5 ± 1.6 | 0.000* |
Clinical pregnancy (%) | 80 (32.3%) | 7 (13.0%) | 0.002* |
Live birth (%) | 58 (23.4%) | 6 (11.1%) | 0.030* |