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Table 2 Comparison of pregnancy outcomes and neonatal outcomes

From: Comparison of pregnancy outcomes among patients of different ages who underwent frozen-thawed high-quality single blastocyst transfer

 

38–40-year-old group (n = 147)

35–37-year-old group (n = 164)

30-34-year-old group (n = 483)

< 30-year-old group (n = 485)

P value

Positive rate of hCG test%(n)

59.2(87/147)b, c

68.3(112/164)

74.1(358/483)

73.2(355/485)

0.003*

Clinical pregnancy rate%(n)

47.6(70/147)b, c

56.1(92/164)

64.4(311/483)

62.9(305/485)

0.001*

Embryo implantation rate%(n)

49.7(73/147)b, c

56.1(92/164)

65.6(317/483)

63.9(310/485)

0.002*

Biochemical pregnancy rate%(n)

11.6(17/147)

12.2(20/164)

9.7(47/483)

10.3(50/485)

0.801

Miscarriage rate%(n)

28.6(20/70)

22.8(21/92)

20.9(65/311)

18.4(56/305)

0.273

Ectopic pregnancy rate%(n)

0(0/70)

1.1(1/92)

0(0/311)

1.0(3/305)

0.193

Twin pregnancy rate%(n)

4.3(3/70)

0(0/92)

1.9(6/311)

1.6(5/305)

0.208

Preterm birth rate%(n)

6.0(3/50)

11.4(8/70)

7.7(19/246)

6.9(17/246)

0.672

Live birth rate%(n)

34.0(50/147)b, c

42.7(70/164)

50.9(246/483)

50.7(246/485)

0.001*

Neonatal birth weight, mean(SD)(g)

3238.65 ± 606.74

3304.26 ± 487.09

3303.35 ± 557.21

3279.90 ± 521.08

0.860

Neonatal birth age, mean(SD)(weeks)

38.95 ± 1.81

38.71 ± 1.79d, e

39.23 ± 1.80

39.31 ± 1.88

0.089

Incidence of macrosomia%(n)

1.9(1/52)

7.1(5/70)

9.6(24/251)

6.8(17/251)

0.195

Incidence of low birth weight infants%(n)

7.7(4/52)

2.9(2/70)

6.4(16/251)

8.0(20/251)

0.439

Birth defect rate%(n)

0(0/52)

1.4(1/70)

1.6(4/251)

0.8(2/251)

0.799

Neonatal sex ratio%(n)

     

Male

67.3(35/52)

51.4(36/70)

58.6(147/251)

53.0(133/251)

 0.181

Female

32.7(17/52)

48.6(34/70)

41.4(104/251)

47.0(118/251)

 0.181

Obstetric complications

     

Gestational hypertension%(n)

1.4(1/70)

3.3(3/92)

1.0(3/311)

1.6(5/305)

0.667

GDM%(n)

7.1(5/70)

4.4(4/92)

2.6(8/311)

3.9(12/305)

0.373

  1. SD Standard deviation, GDM Gestational Diabetes Mellitus
  2. “a” represents P value less than 0.05 between 38–40-year-old group and 35–37-year-old group, “b” represents P value less than 0.05 between 38–40-year-old group and 30-34-year-old group, “c” represents P value less than 0.05 between 38–40-year-old group and <30-year-old group, “d” represents P value less than 0.05 between 35–37-year-old group and 30-34-year-old group, “e” represents P value less than 0.05 between 35–37-year-old group and <30-year-old group, “f” represents P value less than 0.05 between 30-34-year-old group and <30-year-old group
  3. *P < 0.05 was statistical significance
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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