Table 1 Baseline maternal characteristics and peripartum variables

Age (yr)

34.49 ± 5.42

30.59 ± 7.01

< 0.001

Pre-pregnancy BMI

23.58 ± 9.14

23.24 ± 8.71

0.890

Gestational age (wk)

19.51 ± 2.89

20.22 ± 3.05

0.086

Parity

< 0.001

 Nulliparous women: n (%)

0 (0.0%)

100 (63.3%)

 Parous women: n (%)

80 (100.0%)

58 (36.7%)

Bishop score

1.14 ± 0.99

1.36 ± 0.97

0.096

Indication for termination

0.407

 Severe thalassemia: n (%)

23 (28.8%)

64 (40.5%)

 Chromosome abnormality: n (%)

25 (31.3%)

35 (22.2%)

 Severe anomaly: n (%)

27 (33.8%)

48 (30.4%)

 Maternal complication: n (%)

1 (1.3%)

2 (1.3%)

 Others: n (%)

4 (5.0%)

9 (5.7%)