Table 1 Characters of the participants (n = 1975)

Age (years)

< 25

157

24.7

204

32.5

216

30.4

577

29.2

25–30

364

57.1

329

52.4

291

41.0

984

49.8

> 30

116

18.2

95

15.1

203

28.6

414

21.0

Education

Primary school and lower

22

3.5

30

4.8

288

40.6

340

17.2

Middle school

214

33.6

365

58.1

400

56.3

979

49.6

High school

223

35.0

165

26.3

22

3.1

410

20.8

College and above

178

27.9

68

10.8

0

0

246

12.5

Husband's education

Primary school and lower

9

1.4

21

3.3

113

15.9

143

7.2

Middle school

183

28.7

360

57.3

515

72.5

1058

53.6

High school

218

34.2

166

26.4

81

11.4

465

23.5

College and above

227

35.6

81

12.9

1

0.1

309

15.7

Occupation

Laborer

136

21.4

122

19.4

7

1.0

265

13.4

Farmer

33

5.2

186

29.6

689

97.0

908

46.0

Technical

62

9.8

63

10.0

3

0.4

128

6.5

Government official

57

8.7

8

1.3

0

0

65

3.3

Trader

69

10.9

18

2.9

1

0.1

88

4.5

House duty

279

43.9

231

36.8

10

1.4

520

26.3

Parity

Primiparous

591

92.8

567

90.3

482

67.9

1640

83.0

Multiparous

46

7.22

61

9.71

228

32.12

335

16.96

Delivery way

Cesarean section

334

52.4

239

38.1

74

10.4

647

32.8

Vaginal delivery

303

47.6

389

61.9

636

89.6

1328

67.2