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Journal of Population Sciences

Table 1 Background characteristics of births, Nigeria, 1980–2013

From: Clustering of infant deaths among Nigerian women: investigation of temporal patterns using dynamic random effects model

Variables

Birth cohorts

1980–1989

(n = 30,330)

1990–1999

(n = 74,211)

2000–2009

(n = 106,478)

≥ 2010

(n = 21,071)

Child-related variables

 Male sex

52.3

51.3

51.0

50.4

 Birth order

  1

32.8

23.7

20.3

19.9

  2–3

41.7

36.0

33.6

32.4

  4–5

18.2

22.2

23.2

23.1

  6+

7.4

18.1

22.9

24.7

 Birth interval

  First born

32.8

23.7

20.3

19.9

  < 24

27.1

26.1

23.8

17.1

  24–36

28.5

30.5

31.9

33.2

  > 36

11.7

19.6

24.0

29.9

Maternal variables

 Age at child’s birth

  < 20

37.9

21.4

16.0

12.6

  20–34

61.9

73.5

69.5

70.3

  ≥ 35

0.2

5.1

14.5

17.1

 Education

  None

59.9

54.5

51.4

48.9

  Primary

24.8

24.7

22.5

18.6

  Secondary/higher

15.3

20.8

26.0

32.5

 Household wealth quintile

  Poorest

24.4

25.0

24.9

23.4

  Poorer

22.4

22.8

23.2

23.3

  Middle

21.0

20.3

19.1

18.9

  Richer

18.4

17.6

17.3

17.7

  Richest

13.8

14.4

15.5

16.7

 Religion

  Christianity

39.3

38.2

37.3

36.4

  Islam

46.3

51.0

58.1

62.1

  Others

14.4

10.8

4.6

1.5

 Type of place of residence

  Rural

31.1

30.8

31.4

34.6

  Urban

68.8

69.2

68.6

65.4

 Region

  North Central

16.6

17.5

17.5

17.3

  North East

34.5

35.1

35.9

37.5

  North West

12.0

13.2

13.6

13.7

  South East

10.4

9.4

8.6

8.9

  South South

14.4

11.7

10.7

9.4

  South West

12.0

13.1

13.8

13.2