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Table 2 The characteristics and pregnancy outcomes in the PCOS group and the control group after PSM

From: Pregnancy outcomes in patients with polycystic ovary syndrome who conceived after single thawed blastocyst transfer: a propensity score-matched study

 

control group

PCOS group

OR (95% CI)

P-value

n

336

336

/

 

Female age (year)

30, 7

30, 5

/

0.684

BMI (kg/m2)

21.6, 4.1

21.6, 3.8

/

0.928

      < 24

75.9%

75.6%

  

      ≥ 24

24.1%

24.4%

  

Endometrial preparation

  

/

 < 0.001

     HRT cycles

59.5% (200/336)a

75.6% (254/336)b

  

     NCs

36.3% (122/336)a

8.3% (28/336)b

  

     LE cycles

1.2% (4/336)a

12.2% (41/336)b

  

     GnRH-a cycles

3.0% (10/336)a

3.9% (13/336)a

  

Trophectoderm grade

  

/

0.143

     A

32.4%

25.9%

  

     B

64.0%

69.0%

  

     C

3.6%

5.1%

  

     Miscarriage rate

  

/

0.040

     early miscarriage rate

13.7% (46/336)a

14.0% (47/336)a

  

     late miscarriage rate

0.6% (2/336)a

3.3% (11/336)b

  

     Pregnancy complications rate

19.9%

25.6%

1.38 (0.96–1.99)

0.080

     Preterm birth rate

7.1%

10.7%

1.56 (0.91–2.68)

0.105

     Live birth rate

84.2%

79.5%

0.73 (0.49–1.08)

0.109

Neonatal weight

  

/

 

     male infant

3345, 613

3300, 600

 

0.219

     female infant

3200, 550

3150, 625

 

0.169

  1. Non-normally distributed continuous data is presented with median and interquartile range. Categorical data are presented with percentages. BMI Body mass index, HRT Hormone replacement treatment, NCs Natural cycles, LE Letrozole, GnRH-a GnRH agonist, OR Odds ratio, CI Confidence interval. Different letters represent statistically significant differences between the two groups (P-value < 0.05)