Table 6 Univariable and Multivariate regression analysis of Pregnancy outcomes among the whole participants

Biochemical pregnancy rate (%)

SII quartile

 Q1

58.33(7/12)

Ref

Ref

 Q2

68.75(11/16)

1.57 (0.33, 7.48)

0.570

1.21 (0.23, 6.33)

0.818

 Q3

50(3/6)

0.71 (0.10, 5.12)

0.738

0.40 (0.04, 3.88)

0.431

 Q4

20(1/5)

0.18 (0.02, 2.12)

0.172

0.05 (0.00, 1.14)

0.061

Clinical pregnancy rate (n%)

SII quartile

 Q1

58.33(7/12)

Ref

Ref

 Q2

68.75(11/16)

1.57 (0.33, 7.48)

0.570

1.21 (0.23, 6.33)

0.818

 Q3

50.00(3/6)

0.71 (0.10, 5.12)

0.738

0.40 (0.04, 3.88)

0.431

 Q4

20.00(1/5)

0.18 (0.02, 2.12)

0.172

0.05 (0.00, 1.14)

0.061

Early pregnancy loss rate (n%)

SII quartile

 Q1

58.33(14/24)

Ref

Ref

 Q2

0(0/11)

-

0.997

-

0.997

 Q3

33.33(1/3)

2.20 (0.11, 42.74)

0.602

1.36 (0.05, 36.56)

0.854

 Q4

100(1/1)

2.75 (0.14, 55.17)

0.509

2.29 (0.07, 76.10)

0.643

Live birth rate (n%)

SII quartile

 Q1

50.00(6/12)

Ref

Ref

 Q2

62.50(10/16)

1.67 (0.37, 7.61)

0.509

1.30 (0.26, 6.48)

0.747

 Q3

16.67(1/16)

0.20 (0.02, 2.27)

0.194

0.08 (0.00, 1.70)

0.105

 Q4

0(0/1)

-

0.992

-

0.994

Implantation rate (n%)

SII quartile

 Q1

8.33(1/7)

Ref

Ref

 Q2

69.70(23/33)

1.64(0.55,5.01)

0.376

1.34(0.21,8.74)

0.762

 Q3

54.55(6/11)

0.86 (0.20, 3.73)

0.834

1.49 (0.21, 19.6)

0.751

 Q4

20(2/10)

0.18 (0.02, 0.90)

0.054

0.57 (0.00, 49.5)

0.834