Table 2 Sample characteristics and univariate analysis of pregnant women’s data

Total

736

100.00

655

89.00

81

11.00

Demographic and socioeconomic characteristics

  Age^a

0.1823

    <25

307

41.71

277

90.23

30

9.77

    25–30

324

44.02

290

89.51

34

10.49

    >30

98

13.32

82

83.67

16

16.33

  Place of residence^a

0.0753

    Urban

460

62.50

402

87.39

58

12.61

    Rural

275

37.36

252

91.64

23

8.36

  Have you ever received higher education^a

0.0623

    No

433

58.83

393

90.76

40

9.24

    Yes

301

40.90

260

86.38

41

13.62

  Occupation^a

0.4011

    Employed

376

51.09

331

88.03

45

11.97

    Housewife/Unemployed

359

48.78

323

89.97

36

10.03

  Monthly per capita household income (RMB)^a

0.0602

    ≤ 3000

177

24.05

160

90.40

17

9.60

    3001–5000

299

40.63

273

91.30

26

8.70

    ≥ 5001

258

35.05

220

85.27

38

14.73

  Payment method of medical expenses^a

0.5926

    At one’s own expense

292

39.67

262

89.73

30

10.27

    Medical insurance

442

60.05

391

88.46

51

11.54

    Prenatal information

  BMI^a

0.5312

    < 18.5

131

17.80

118

90.08

13

9.92

    18.5–23.9

511

69.43

456

89.24

55

10.76

    ≥ 24

90

12.23

77

85.56

13

14.44

  Drinking history

0.2168^*

    Yes

8

1.09

6

75.00

2

25.00

    No

728

98.91

649

89.15

79

10.85

  Smoking history

1.0000^*

    Active smoking

8

1.09

7

87.50

1

12.50

    Passive smoking

18

2.45

16

88.89

2

11.11

    No smoking

710

96.47

632

89.01

78

10.99

  Parity

< 0.0001

    0 (primiparity)

457

62.09

388

84.90

69

15.10

    ≥ 1

279

37.91

267

95.70

12

4.30

  Previous Medical History

0.2424

    Yes

50

6.79

42

84.00

8

16.00

    No

686

93.21

613

89.36

73

10.64

  Number of Abortions

0.5282

    0

450

61.14

404

89.78

46

10.22

    1

171

23.23

152

88.89

19

11.11

    ≥ 2

115

15.63

99

86.09

16

13.91

Personal factors

  Willingness of delivery mode in late pregnancy

< 0.0001

  Uncertain

295

40.08

265

89.83

30

10.17

  Tending to choose vaginal delivery

409

55.57

371

90.71

38

9.29

  Tending to choose cesarean delivery

32

4.35

19

59.38

13

40.63

  Exercise during pregnancy

0.3272

    Yes

610

82.88

546

89.51

64

10.49

    No

126

17.12

109

86.51

17

13.49

  Attending a school for pregnant women during pregnancy

0.9026

    Yes

350

47.55

312

89.14

38

10.86

    No

386

52.45

343

88.86

43

11.14

  Late-pregnancy stress^a

0.6195

    No

84

11.41

76

90.48

8

9.52

    Yes

644

87.50

571

88.66

73

11.34

  Late-pregnancy anxiety^a

0.3818

    No

648

88.04

578

89.20

70

10.80

    Yes

78

10.60

67

85.90

11

14.10

  Late-pregnancy depression^a

0.1539^*

    No

711

96.60

630

88.61

81

11.39

    Yes

21

2.85

21

100.00

0

0.00

Family factors

  Family care^a

0.8520

    Low

26

3.53

24

92.31

2

7.69

    Medium

174

23.64

155

89.08

19

10.92

    High

534

72.55

474

88.76

60

11.24

  Husband’s advice

0.0315^*

    Does not recommend cesarean delivery

707

96.06

633

89.53

74

10.47

    Recommends cesarean delivery

29

3.94

22

75.86

7

24.14

  Parents’ advice

0.0033^*

    Do not recommend cesarean delivery

721

97.96

646

89.60

75

10.40

    Recommend cesarean delivery

15

2.04

9

60.00

6

40.00

  In-laws’ advice

0.0061^*

    Do not recommend cesarean delivery

724

98.37

648

89.50

76

10.50

    Recommend cesarean delivery

12

1.63

7

58.33

5

41.67

Social factors

  Social support^a

0.7792

    Low

153

20.79

138

90.20

15

9.80

    Moderate

431

58.56

382

88.63

49

11.37

    High

129

17.53

113

87.60

16

12.40

  Delivery mode of surrounding mothers

0.0268

    Mainly vaginal delivery

347

47.15

320

92.22

27

7.78

    Mainly cesarean delivery

105

14.27

89

84.76

16

15.24

    The two delivery methods are equal

284

38.59

246

86.62

38

13.38

  Friends’ advice

0.0321^*

    Do not recommend cesarean delivery

713

96.88

638

89.48

75

10.52

    Recommend cesarean delivery

23

3.13

17

73.91

6

26.09

  Doctors’ advice^a

0.0340^*

    Do not recommend cesarean delivery

714

97.01

638

89.36

76

10.64

    Recommend cesarean delivery

12

1.63

8

66.67

4

33.33

  Medical staff service

0.6003^*

    Good

693

94.16

618

89.18

75

10.82

    General

40

5.43

34

85.00

6

15.00

    Poor

3

0.41

3

100.00

0

0.00