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Table 1 Frequency of hospitalisations by ALRI diagnosis and age group in Aboriginal and non-Aboriginal children

From: A retrospective population-based cohort study identifying target areas for prevention of acute lower respiratory infections in children

ALRI diagnosis Age group Number of hospitalisations (Ratea)
   Aboriginal Non-Aboriginal
Whooping cough <1 month 6 (4.2) 25 (1.3)
  1-2 months 36 (12.7) 101 (2.7)
  3-5 months 42 (10.1) 62 (1.1)
  6-11 months 13 (1.6) 26 (0.2)
  12-23 months 6 (0.4) 23 (0.1)
  2-4 years 0 - 10 (0.0)
  5-9 years 1 (0.05) 6 (0.02)
Pneumonia <1 month 42 (29.1) 136 (7.2)
  1-2 months 118 (41.6) 133 (3.6)
  3-5 months 241 (57.9) 212 (3.9)
  6-11 months 570 (71.7) 629 (6.0)
  12-23 months 740 (51.0) 1,614 (8.4)
  2-4 years 711 (21.4) 1,937 (4.4)
  5-9 years 124 (6.0) 520 (1.8)
Bronchiolitis <1 month 119 (82.4) 546 (28.9)
  1-2 months 579 (204.0) 1,958 (52.6)
  3-5 months 923 (222.1) 2,221 (40.7)
  6-11 months 1,090 (137.2) 2,510 (24.0)
  12-23 months 467 (32.2) 1,172 (6.1)
  2-4 years 97 (2.9) 281 (0.6)
  5-9 years 3 (0.1) 22 (0.1)
Influenza <1 month 4 (2.8) 23 (1.2)
  1-2 months 20 (7.0) 72 (1.9)
  3-5 months 29 (7.0) 101 (1.9)
  6-11 months 43 (5.4) 179 (1.7)
  12-23 months 41 (2.8) 270 (1.4)
  2-4 years 42 (1.3) 321 (0.7)
  5-9 years 9 (0.4) 80 (0.3)
Bronchitis <1 month 3 (2.1) 2 (0.1)
  1-2 months 20 (7.0) 24 (0.6)
  3-5 months 46 (11.1) 52 (1.0)
  6-11 months 69 (8.7) 107 (1.0)
  12-23 months 88 (6.1) 147 (0.8)
  2-4 years 69 (2.1) 135 (0.3)
  5-9 years 11 (0.5) 33 (0.1)
Unspecified ALRI <1 month 15 (10.4) 35 (1.9)
  1-2 months 15 (20.4) 55 (1.5)
  3-5 months 119 (28.6) 88 (1.6)
  6-11 months 319 (40.1) 309 (3.0)
  12-23 months 480 (33.0) 803 (4.2)
  2-4 years 386 (11.7) 1,008 (2.3)
  5-9 years 65 (3.2) 254 (0.9)
Total ALRI <1 month 189 (131.0) 767 (40.6)
  1-2 months 831 (292.7) 2,343 (62.9)
  3-5 months 1,400 (336.8) 2,736 (50.2)
  6-11 months 2,104 (264.8) 3,760 (36.0)
  12-23 months 1,822 (125.5) 4,029 (21.0)
  2-4 years 1,305 (39.4) 3,692 (8.4)
  5-9 years 213 (10.4) 915 (3.2)
  1. aRate per 1000 child-years at risk