Basal progesterone

≤1.5 ng/ml (n = 268)

Basal progesterone

>1.5 ng/ml (n = 16)

P value

Retrieved oocytes No.

11.54 ± 2.23

13.63 ± 2.31

0.000*

Retrieved M II oocytes No.

6.65 ± 1.55

7.83 ± 1.97

0.010*

Maturation rate %

(M II/oocytes retrieved)

57.6 ± 14.1

57.4 ± 14.0

0.281

Fertilized oocytes No.

4.23 ± 0.69

4.63 ± 1.27

0.545

Fertilization rate %

(Fertilized/ M II retrieved)

63.6 ±15.3

59.1 ± 17.9

0.046

Cleaved embryos No.

4.12 ± 0.66

4.25 ± 1.15

0.717

Embryos cleavage rate %

(Cleaved/fertilized)

97.4 ± 0.6

91.8 ± 1.3

0.371

Clinical pregnancy (%)

84 (29.4%)

3 (18.8%)

0.571

Live birth (%)

61 (21.3%)

3 (18.8%)

1.000