Table 1 Comparison of general information before and after data matching between the two groups

Age (years)

32.75 ± 4.54

33.10 ± 4.36

0.04

32.83 ± 4.59

32.83 ± 4.44

0.99

FSH (IU/L)

7.42 ± 2.76

6.57 ± 2.30

 < 0.001

7.16 ± 2.53

6.99 ± 2.54

0.13

AMH

2.96 ± 2.64

2.65 ± 2.43

0.002

2.89 ± 2.63

2.78 ± 2.67

0.33

EM (mm)

10.67 ± 1.59

10.64 ± 1.66

0.74

10.67 ± 1.59

10.65 ± 1.63

0.86

Number of embryos transferred

0.53

0.82

 1

201 (17.2%)

263 (16.3%)

184 (17.4%)

188 (17.8%)

 2

969 (82.8%)

1352 (83.7%)

873 (82.6%)

869 (82.2%)

Number of oocytes obtained

9.60 ± 4.40

8.65 ± 3.99

 < 0.001

9.36 ± 4.33

9.07 ± 4.17

0.12

Type of embryos transferred

0.05

0.48

 D3

1126 (96.2%)

1575 (97.5%)

1016 (96.1%)

1022 (96.7%)

 D5

44 (3.8%)

40 (2.5%)

41 (3.9%)

35 (3.3%)

Trigger mode

 < 0.001

0.11

 Single trigger

601 (51.4%)

1137 (70.4%)

592 (56%)

628 (59.4%)

 Double trigger

569 (48.6%)

478 (29.6%)

465 (44%)

429 (40.6%)