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Table 4 Pregnancy and obstetric outcomes in group A and group B

From: Pregnancy outcomes of dichorionic triamniotic triplet pregnancies after in vitro fertilization-embryo transfer: multifoetal pregnancy reduction versus expectant management

Pregnancy outcomes

Group A

Group B

P-value

OR (95% CI)

Pregnancy

84

149

  

 Miscarriage rate, % (n)

8.3 (7/84)

7.4 (11/149)

0.794

1.140 (0.425-3.063)

 Preterm birth rate, % (n)

8.3 (7/84)

47.0 (70/149)

<0.001

0.103 (0.044-0.237)

 Term birth rate, % (n)

83.3 (70/84)

45.6 (68/149)

<0.001

5.956 (3.084-11.502)

Caesarean section rate, % (n)

68.8 (53/77)

86.2 (119/138)

0.002

0.353 (0.178-0.698)

Babies born

77

276

  

Live births

76

254

  

Live birth rate, % (n)

90.5 (76/84)

85.2 (254/298)

0.216

1.646 (0.743-3.647)

Perinatal death, % (n)

1.3 (1/77)

9.1 (25/276)

0.021

0.132 (0.018-0.991)

 IUD rate, % (n)

1.3 (1/77)

8.0 (22/276)

0.036

0.152 (0.020-1.146)

 NND rate, % (n)

0 (0/77)

1.1 (3/276)

1.000

-

Gestational age at delivery (weeks)

38.5 ± 2.1

35.7 ± 3.1

<0.001

 

 ≥ 37 weeks, % (n)

90.9 (70/77)

49.3 (68/138)

<0.001

10.294 (4.419-23.979)

 < 37 weeks, % (n)

9.1 (7/77)

50.7 (70/138)

<0.001

0.097 (0.042-0.226)

 VPB 24-31+6 weeks, % (n)

2.6 (2/77)

7.2 (10/138)

0.219

0.341 (0.073-1.600)

Live birth weight (g)

3168 ± 557

2348 ± 488

<0.001

 

 ≥ 2500 g, % (n)

90.8 (69/76)

41.3 (105/254)

<0.001

13.988 (6.182-31.651)

 LBW < 2500 g, % (n)

9.2 (7/76)

58.7 (149/254)

<0.001

0.071 (0.032-0.162)

 VLBW < 1500 g, % (n)

0 (0/76)

4.3 (11/254)

0.075

-

  1. Group A = DCTA pregnancy reduced to MC singleton pregnancy; Group B = DCTA pregnancy reduced to MCDA twin pregnancy
  2. DCTA dichorionic triamniotic, MC monochorionic, MCDA monochorionic diamniotic, OR odds ratio, CI confidence interval, IUD intrauterine death, NND neonatal death, VPB very preterm birth, LBW low birth weight, VLBW very low birth weight