Table 1 Patient characteristics of clinical

No.of cycles

225

2142

1495

580

60

Age of woman (years)

29.80 ± 3.93

29.69 ± 3.89

29.92 ± 3.82

29.30 ± 3.80^c

29.65 ± 3.92

0.025

Body mass index (kg/m²)

23.91 ± 3.50

23.80 ± 3.22

23.56 ± 3.17

22.49 ± 3.18^abc

22.52 ± 3.37^ab

0.000

 FSH (IU/L)

6.38 ± 1.86

6.64 ± 1.90

7.06 ± 2.12^ab

7.35 ± 2.13^ab

7.73 ± 2.33^ab

0.000

 LH (IU/L)

4.89 ± 3.60

5.38 ± 3.77

5.99 ± 3.90^ab

6.80 ± 5.67^abc

6.71 ± 4.81^ab

0.000

 P (nmol/L)

145.60 ± 64.69

152.96 ± 109.13

155.76 ± 146.55

159.43 ± 169.57

164.23 ± 120.90

0.615

 E2(pmol/L)

1.52 ± 2.17

1.42 ± 1.79

1.45 ± 3.03^ab

1.57 ± 3.65

1.90 ± 2.63

0.000

 Ant-Mullerian hormone AMH (pmol/L)

37.00 ± 23.12

33.16 ± 22.03

31.90 ± 22.52^a

32.82 ± 23.50

32.98 ± 23.32

0.029

 Start-up Gn does (IU)

163.90 ± 52.36

167.20 ± 56.47

169.17 ± 60.02

157.46 ± 58.74^bc

157.71 ± 62.91

0.000

 Total Gn dose (IU)

2532.36 ± 993.04

2479.22 ± 1012.23

2529.74 ± 1080.28

2351.01 ± 1083.11^abc

2308.48 ± 1117.57

0.000

 LH_{day 1}(IU/L)

0.59 ± 0.29

0.72 ± 0.38a

0.97 ± 1.01^ab

1.06 ± 0.73^abc

1.05 ± 0.69^ab

0.000

 E2(pmol/L)

1367.07 ± 6341.47

12,884.09 ± 5950.26^ad

13,131.38 ± 5834.56^ad

14,517.02 ± 6740.33^bc

13,151.15 ± 6015.93

0.000

 P (nmol/L)

3.89 ± 1.42^bcd

3.56 ± 1.44^cd

3.35 ± 1.49

3.21 ± 1.42

3.30 ± 1.34

0.000

 Endometrial thickness on HCG

11.35 ± 6.85

11.29 ± 2.26

11.41 ± 2.29^ae

11.40 ± 2.09

10.56 ± 2.01

0.002

 No. of follicles(≥14 mm)

13.23 ± 4.47

12.17 ± 4.21^a

11.61 ± 3.78^ab

11.36 ± 3.84^ab

8.75 ± 3.10^abcd

0.000

 No. of follicles(≥16 mm)

9.65 ± 3.47

9.24 ± 3.31

8.94 ± 3.00

8.86 ± 3.16^a

7.00 ± 2.35^abcd

0.000

 No. of follicles(≥18 mm)

6.11 ± 2.42

6.03 ± 2.20

5.95 ± 2.05

5.99 ± 2.17

4.98 ± 1.94^abcd

0.000