Table 3 Outcomes of group G and group GP stratified by 35 years of age before and after PS matching

Age < 35

G (n = 3799)

GP (n = 452)

P

G(n = 419)

GP (n = 419)

P

 Clinical Pregnancy

2296 (60.4)

259 (57.3)

0.198

210 (50.1)

243 (58)

0.022

 OR (95% CI)

Ref

1.35 (1.08–1.7)

0.009

Ref

1.38 (1.05–1.82)

0.02

 Multiple pregnancy

69 (3)

84 (32.4)

< 0.001

4 (1.9)

77 (31.7)

< 0.001

 OR (95% CI)

Ref

17.88 (11.36–28.15)

< 0.001

Ref

23.81 (8.54–66.43)

< 0.001

 Miscarriage

267 (11.6)

38 (14.7)

0.152

23 (11)

36 (14.8)

0.223

 OR (95% CI)

Ref

1.22 (0.81–1.84)

0.351

Ref

1.42 (0.81–2.48)

0.219

 Live birth

2006 (52.8)

218 (48.2)

0.066

184 (43.9)

204 (48.7)

0.166

 OR (95% CI)

Ref

1.21 (0.97–1.51)

0.098

Ref

1.22 (0.93–1.59)

0.159

Age ≥ 35

G (n = 685)

GP (n = 101)

P

G(n = 81)

GP (n = 81)

P

 Clinical Pregnancy

311 (45.4)

54 (53.5)

0.129

31 (38.3)

46 (56.8)

0.018

 OR (95% CI)

Ref

1.93 (1.21–3.08)

0.006

Ref

2.17 (1.15–4.1)

0.017

 Multiple pregnancy

5 (1.6)

12 (22.2)

< 0.001

1 (3.2)

12 (26.1)

0.009

 OR (95% CI)

–

–

–

Ref

10.87 (1.4–84.62)

0.023

 Miscarriage

79 (25.4)

9 (16.7)

0.166

9 (29)

7 (15.2)

0.143

 OR (95% CI)

Ref

0.37 (0.16–0.88)

0.024

Ref

0.45 (0.15–1.37)

0.159

 Live birth

226 (33)

45 (44.6)

0.022

22 (27.2)

39 (48.1)

0.006

 OR (95% CI)

Ref

2.71 (1.63–4.5)

< 0.001

Ref

2.56 (1.3–5.03)

0.006