Table 2 Embryological and clinical outcomes

No.of oocytes

15.22 ± 5.66

13.54 ± 5.23^a

12.90 ± 5.05^ab

12.30 ± 4.88^ab

9.6 ± 4.09^abcd

0.000

No.of diploid fertilized oocytes

9.85 ± 4.70

8.69 ± 4.41^a

8.39 ± 4.33^a

7.78 ± 3.96^ab

5.92 ± 2.78^abcd

0.000

No.of embryos

7.90 ± 4.48

6.83 ± 4.03^a

6.44 ± 3.88^ab

6.22 ± 3.62^ab

4.40 ± 2.55^abcd

0.000

No.of high quality embryos

4.32 ± 3.71

3.97 ± 3.42

3.76 ± 3.19

3.71 ± 3.04

2.52 ± 2.27^abcd

0.007

No.of embryos transferred

1.58 ± 0.49

1.63 ± 0.48

1.65 ± 0.48

1.66 ± 0.48

1.70 ± 0.46

0.203

 Cleavage stage embryo rate

62.22%

68.60%

70.03%

70.34%

88.33%^abcd

0.002

 Blastocysts rate

37.78%

31.40%

29.97%

29.66%

11.67%

 OHSS rate

3.56%

2.80%

3.95%

4.66%

6.67%

0.075

 Biochemical pregnancy rate

69.33%

67.46%

67.56%

68.62%

66.67%

0.963

 Clinical pregnancy rate

66.67%

64.33%

63.21%

64.48%

63.33%

0.868

 Ectopic pregnancy rate

2.67%

1.16%

1.59%

1.07%

0

0.469

 Early Spontaneous abortion rate

10.67%

9.65%

8.47%

9.09%

2.63%

0.408

 Live birth rate

56.44%

55.56%

54.65%

56.03%

60%

0.899

 Premature birth rate

21.26%

15.71%

14.44%

17.54%

22.22%

0.216