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Table 3 Decomposed differences in life expectancy by health risks, Indigenous vs Non-Indigenous, Northern Territory, Australia, 1986–2005

From: Decomposing Indigenous life expectancy gap by risk factors: a life table analysis

  LE(a) at birth Contribution and CI(c)
Health risk 1986-1990 1991-1995 1996-2000 2001-2005 1986-1990 1991-1995 1996-2000 2001-2005
Male       %   
Smoking 3.25 3.41 3.75 4.01 21 24 23 21
Alcohol 1.08 0.83 0.80 1.02 7 6 5 5
Disadvantage 7.01 6.34 7.31 7.79 45 45 44 42
Obesity 1.35 1.46 1.86 1.77 9 10 11 9
Pollution 0.22 0.22 0.23 0.23 1 2 1 1
Assault −0.02 −0.01 0.01 0.05 0 0 0 0
All-combined(b) 9.8 9.3 10.5 11.4 63 66 63 61
Unexplained 5.8 4.8 6.1 7.3 37 34 37 39
LE (a) at birth     95% CI (c)  
Indigenous 56.2 58.6 59.4 59.5 55.4-57.0 57.7-59.4 58.7-60.2 58.8-60.3
Non- Indigenous 71.8 72.7 76.1 78.3 71.2-72.3 72.2-73.1 75.6-76.6 77.8-78.7
Actual difference 15.6 14.1 16.6 18.8 14.8-16.3 13.4-14.8 16.0-17.3 18.1-19.4
Female       %   
Smoking 3.59 3.28 3.21 2.51 17 19 17 14
Alcohol 0.19 0.26 0.39 0.50 1 2 2 3
Disadvantage 11.17 9.31 9.11 8.97 53 54 48 51
Obesity 2.76 2.95 2.36 2.57 13 17 12 15
Pollution 0.33 0.32 0.27 0.20 2 2 1 1
Assault 0.63 0.52 0.37 0.56 3 3 2 3
All-combined(b) 14.1 12.2 12.1 11.9 66 70 64 68
Unexplained 7.1 5.2 6.9 5.6 34 30 36 32
LE (a) at birth     95% CI (c)  
Indigenous 63.2 64.4 65.0 67.9 62.4-64.0 63.6-65.3 64.2-65.7 67.1-68.7
Non- Indigenous 84.4 81.8 84.0 85.4 83.6-85.3 81.1-82.5 83.4-84.6 84.8-85.9
Actual difference 21.2 17.4 19.0 17.5 20.0-22.5 16.4-18.4 18.2-19.9 16.7-18.2
  1. Notes: (a) LE=life expectancy, (b) All-combined model reflects the explanatory power of all risks combined and is not equivalent to the sum of the individual risks. Apportioning the combined overall risk back to each contributing risk factor would be highly sensitive to assumptions and is therefore not presented in this analysis, (c) CI=confidence interval. Data source: Northern Territory Department of Health, Australia.