Table 1 Socio-demographic characteristics of respondents

Age group (years)

 20–29

56

25.9

 30–39

147

68.1

  ≥ 40

13

6.0

 Mean SD

32.51 ± 4.5

Religion

 Christianity

192

88.9

 Islam

24

11.1

Ethnic group

 Yoruba

151

69.9

 Igbo

46

21.3

 Others

19

8.8

Highest educational level

 Primary

5

2.3

 Secondary

44

20.4

 Tertiary

167

77.3

Gravidity

 2

131

60.6

 3

58

26.9

 4

15

6.9

 > 4

12

5.6

Number of children

 1

183

84.7

 2

30

13.9

 3

2

0.9

 4

1

0.5

Gestational age

  ≤ 28

75

34.7

 29–34

106

49.1

  ≥ 35

35

16.2