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Table 2 Percentage of under-five children according to ARI symptoms status, maternal and child characteristics, Nigeria, 2003–2013

From: Household environment and symptoms of childhood acute respiratory tract infections in Nigeria, 2003–2013: a decade of progress and stagnation

Variables 2003 (n = 5445) 2008 (n = 24,975) 2013 (n = 28,950)
All children Children with ARI symptoms All children Children with ARI symptoms All children Children with ARI symptoms
ARI symptoms 550 (10.3) 1159 (4.6) 1095 (3.8)
Maternal characteristics
 Age of mother
  <  20 6.9 9.9 5.2 6.8 4.9 5.6
  20–29 51.4 54.5 48.1 53.2 47.8 50.8
  30–39 32.9 28.0 36.6 31.1 37.5 32.1
  > = 40 8.7 7.6 10.1 8.9 9.8 11.5
 Education
  None 50.0 53.6 45.4 47.8 48.2 44.5
  Primary 23.6 26.0 23.3 23.8 19.2 23.5
  Secondary/higher 26.4 20.4 31.3 28.5 32.6 31.9
 Occupation
  Not working 34.8 33.4 30.7 29.6 29.6 30.9
  Professional/services 5.0 3.8 7.5 5.4 8.5 8.1
  Sales 38.9 43.1 33.5 28.2 39.2 30.2
  Agriculture/manual 21.2 19.7 28.2 36.8 22.7 30.8
Child characteristics
 Age (months)
  0–11 24.9 35.0 22.9 24.2 21.6 24.7
  12–23 18.7 21.4 19.8 28.1 20.4 29.3
  24–35 19.6 18.8 18.6 19.5 19 21.1
  > = 36 36.8 24.8 38.7 28.2 39.1 24.9
 Sex
  Male 50.8 51.7 50.5 51.2 50.1 50.5
  Female 49.2 48.3 49.5 48.8 49.9 49.5
 Birth order
  1 20.3 22.4 19.3 21.0 19.4 17.1
  2–3 31.7 30.5 33.7 32.4 32.8 31.4
  4–5 22.3 24.4 23.7 21.2 23.7 22.3
  6+ 25.8 22.7 23.4 25.4 24.1 29.1
 Chronic malnutrition
  Yes 31.5 28.8 30.6 34.9 33.1 33.6
  No 68.5 71.2 69.4 65.1 66.9 66.4