Table 1 Social-demographic of mothers

Ages(years)

 < 25

42

37.5

 ≥ 25

70

62.5

Educational level

Illiteracy or little literacy

6

5.4

Primary school (1–5 grades)

17

15.2

Middle school (6–9 grades)

33

29.5

High school (10–12 grades)

29

25.9

College or above (12–14 grades)

27

24.1

Occupation

employed

35

31.3

unemployed

77

68.7

Ethnicity

Han

37

33

Ethnic minority

75

67.0

Marital status

Married

96

85.7

Unmarried or others

16

14.3

Number of children

1

51

45.5

2

44

39.3

 > 2

17

15.2

Gender of neonate

Male

62

55.4

Female

50

44.6

Family financial difficulty

Yes

53

47.3

No

59

52.7