Table 1 Maternal and infants’ characteristics in 4 kinds of delivery modes

 Maternal age(years)

25.95 ± 3.02

27.41 ± 3.83

26.48 ± 3.73

27.15 ± 2.87

<0.001

 Gestational age(weeks)

39.20 ± 1.22

39.12 ± 1.37

39.29 ± 1.06

39.15 ± 1.18

0.191

 Gravidity

1.55 ± 0.80

1.83 ± 1.04

1.65 ± 0.86

1.72 ± 0.83

<0.001

 Pre-pregnancy BMI(kg/m²)

19.96 ± 2.32

20.73 ± 2.75

20.44 ± 2.66

20.88 ± 2.71

<0.001

 Previous adverse pregnant outcome

638(61.9%)

187(54.0%)

317(57.7%)

24(51.1%)

0.032

 Pregnancy-specific anxiety score in 1st trimester

20.26 ± 4.82

19.80 ± 4.26

20.55 ± 5.13

19.55 ± 3.72

0.191

 Pregnancy-specific anxiety score in 2nd trimester

19.61 ± 4.44

19.91 ± 4.62

19.92 ± 4.90

19.27 ± 3.84

0.459

 Pregnancy-specific anxiety score in 3rd trimester Infants’ characteristics

18.72 ± 4.00

18.96 ± 4.30

19.17 ± 4.63

18.76 ± 3.43

0.245

Gender

0.174

 Male

544(52.8%)

163(46.8%)

281(50.9%)

28(59.6%)

 Female

487(47.2%)

185(53.2%)

271(49.1%)

19(40.4%)

Birth weight(g)

3304.81 ± 379.63

3443.95 ± 467.26

3417.05 ± 397.17

3481.70 ± 350.30

<0.001

Birth height(cm)

50.13 ± 1.71

50.03 ± 1.76

49.95 ± 1.51

50.70 ± 1.54

0.013

Head circumference(cm)

33.82 ± 1.30

34.33 ± 1.73

34.20 ± 1.46

34.14 ± 2.04

<0.001

Placental size(cm³)

685.79 ± 180.12

815.70 ± 224.56

799.87 ± 207.96

754.31 ± 230.07

<0.001

 1-Min

9.95 ± 0.46

9.94 ± 0.53

9.97 ± 0.42

9.91 ± 0.46

0.784

 5-Min

9.98 ± 0.23

9.99 ± 0.16

10.00 ± 0.04

10.00 ± 0.00

0.219