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Table 1 Comparison of the characteristics of infertile women received GnRH-a trigger after GnRH antagonist-based stimulation protocols via propensity score matching

From: Low LH level does not indicate poor IVF cycle outcomes with GnRh-a single trigger: a retrospective analysis

Characteristics

Before propensity score matching

P value

After propensity score matching

P value

LH normal

LH low

LH normal

LH low

n = 906

n = 51

n = 137

n = 47

Woman’s age

29(27–32)

30(27–31)

0.555

29(27–31)

30(27–31)

0.843

BMI

21.48(19.53–23.84)

23.44(21.34–25.95)

< 0.001

22.96(20.945–25.91)

23.42(21.03–25.04)

0.935

Duration of infertility

3(2–5)

3(2–5)

0.612

3(2–5)

3(2–5)

0.841

Infertility type

  

0.452

  

0.594

 Primary infertility

528(58.3)

27(52.9)

 

79(57.7)

25(53.2)

 

 Secondary infertility

378(41.7)

24(47.1)

 

58(42.3)

22(46.8)

 

  FSH

6.825(5.96–7.85)

5.62(5.06–6.91)

< 0.001

5.96(5.46–6.67)

5.98(5.13–6.96)

0.642

  LH

5.46(3.92–7.93)

3.35(2.6–4.78)

< 0.001

4.16(2.99–5.49)

3.69(2.71–5.19)

0.215

  E2

47(36–59)

44(32–54)

0.085

44(34–58)

42(32–53)

0.210

  P

0.58(0.40–0.88)

0.50(0.27–0.76)

0.042

0.57(0.37–0.795)

0.50(0.29–0.81)

0.278

  AMH

6.89(5.01–9.69)

6.35(4.64–9.82)

0.456

6.86(4.94–9.76)

6.47(4.66–10.21)

0.723

  AFC

26(20–33)

23(17–30)

0.061

24(16.5–30)

24(18–30)

0.967

  GN dose

1500(1350–1950)

2000(1575–2325)

< 0.001

1888(1500–2250)

1950(1538–2275)

0.460

  GN days

10(9–10)

10(9–11)

0.002

10(9–11)

10(9–11)

0.808

  Fertilization method

  

0.726

  

0.713

  IVF

728(80.4)

42(82.4)

 

114(83.2)

38(80.9)

 

  ICSI

178(19.6)

9(17.6)

 

23(16.8)

9(19.1)

 
  1. Data are presented as median (IQR) or n (%)
  2. Abbreviations: BMI body mass index, FSH follicular-stimulating hormone, LH luteinizing hormone, E2 estradiol, P progesterone, AMH anti-Müllerian hormone, AFC antral follicle count, GN gonadotropin, IVF in vitro fertilization, ICSI intracytoplasmic sperm injection, IQR interquartile range