Table 3 Antenatal, intrapartum complication and maternal outcomes in twin pregnancy

Antepartum complications – total n (%)

9 (3.7)

11 (6.4)

0.74 (0.28, 1.94)

0.536

 • Placenta previa – n (%)

2 (0.8)

5 (2.9)

 • Abruption – n (%)

2 (0.8)

0 (0.0)

 • Placenta accreta syndrome – n (%)

1 (0.4)

1 (0.6)

 • Prolapsed cord – n (%)

1 (0.4)

1 (0.6)

 • Vasa previa – n (%)

0 (0.0)

0 (0.0)

 • Chorioamnionitis – n(%)

2 (0.8)

0 (0.0)

 • Pulmonary edema – n (%)

1 (0.4)

3 (1.7)

 • Congestive heart failure – n (%)

0 (0)

1 (0.6)

Twin-related complications – total n (%)

114 (47.3)

40 (23.3)

2.88 (1.83, 4.54)

<0.001

 • Discordant twin – n (%)

92 (38.2)

36 (20.9)

 • Selected fetal growth restriction – n (%)

45 (18.7)

10 (5.8)

 • Twin-to-twin transfusion syndrome (TTTS) – n (%)

30 (12.5)

0 (0.0)

 • Acardiac twins – n (%)

6 (2.5)

0 (0.0)

 • Single fetal demise – n (%)

24 (10.0)

6 (3.5)

 • Twin anemia-polycythemia sequence (TAPS) 

1 (0.4)

0 (0)

 • Twin reversed arterial perfusion (TRAP sequence)

3 (1.2)

0 (0)

 • Conjoined

3 (1.2)

0 (0)

Pregnancy induced hypertension – total n (%)

25 (10.4)

20 (11.6)

0.83 (0.42, 1.64)

0.596

 • Chronic hypertension

3 (1.2)

3 (1.7)

 • Gestational hypertension

5 (2.1)

1 (0.6)

 • Preeclampsia without severe features

8 (3.3)

6 (3.5)

 • Preeclampsia with severe features

8 (3.3)

10 (5.8)

 • Eclampsia

1 (0.4)

0 (0.0)

Gestational diabetes mellitus – total n (%)

19 (7.9)

18 (10.5)

1.08 (0.49, 2.41)

0.845

 • Insulin control – n (%)

4 (1.7)

6 (3.5)

Postpartum hemorrhage

51 (21.2)

49 (28.5)

0.73 (0.45, 1.17)

0.187

Intraoperative intervention – total n (%)

13 (5.4)

6 (3.5)

2.73 (0.92, 8.05)

0.069

ICU admission – n (%)

0 (0.0)

6 (3.5)

NA

Blood transfusion – n (%)

2 (0.8)

2 (1.2)

1.36 (0.18, 10.38)

0.766