Table 1 The characteristics of participants

Age

27.11 (4.10)

27.37 (3.96)

27.02 (4.96)

0.67^a

Gestational age

22.92 (8.09)

23.48 (8.83)

22.29 (8.79)

0.49^a

Pregnancy order

0.82^a

The first

77 (71.6)

40 (75.5)

38 (72.5)

The second or more

26 (28.4)

13 (24.5)

14 (27.5)

Education

0.42^b

≤Secondary

65 (62.6)

31 (58.5)

34 (66.7)

> Higher

39 (37.4)

22 (41.5)

17 (33.3)

Husband's education

0.15^b

≤ Secondary

68 (65.4)

31 (58.5)

37 (72.5)

> Higher

36 (34.5)

22 (41.5)

14 (27.5)

Income

0.41^b

Poor

15 (14.5)

6 (11.3)

9 (17.6)

Fair/good

89 (85.5)

47 (88.7)

42 (82.4)