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Table 1 Demographic and health service use characteristics of injury-related hospitalisations of individuals aged 18+ years and matched non-injured comparison cohort in 2009, co-morbidity and mortality data in Australia

From: Higher mortality risk among injured individuals in a population-based matched cohort study

Characteristic Injury cohort
(n = 166,589)
Non-injured comparison cohort
(n = 166,589)
 
  n % n %  
Australian state
New South Wales 90,833 54.5 90,833 54.5  
Queensland 58,833 35.3 58,833 35.3  
South Australiaa 16,923 10.2 16,923 10.2  
Gender
Male 94,939 57.0 94,939 57.0  
Female 71,650 43.0 71,650 43.0  
Age group
18–24 23,350 14.0 23,350 14.0  
25–34 26,395 15.8 26,395 15.8  
35–44 24,168 14.5 24,168 14.5  
45–54 21,452 12.9 21,452 12.9  
55–64 17,642 10.6 17,642 10.6  
65–74 14,322 8.6 14,322 8.6  
75–84 19,862 11.9 19,862 11.9  
85+ 19,398 11.6 19,398 11.6  
Location of residence
Urban 108,309 65.0 108,309 65.0  
Rural 58,280 35.0 58,280 35.0  
Pre-existing health service use
Number of emergency department presentations in the 12 months prior to the index injury date 152,183 - 40,469 - -
Number of hospital admissions in 12 months prior to the index injury date 153,200 - 66,766 - -
Total hospital length of stay prior to the index injury date (days) 759,287 - 277,099 - -
Charlson comorbidity conditions      χ 2 (df)
0 140,748 84.5 157,930 94.8 10004.4 (2)*
1–2 21,567 13.0 8145 4.9  
≥3 4274 2.6 514 0.3  
Other health conditions
Mental health diagnosesb 10,390 6.2 1498 0.9 6897.1 (1)*
Alcohol misuse and dependence 12,560 7.5 727 0.4 10975.8 (1)*
Drug-related dependence 3165 1.9 369 0.2 2235.8 (1)*
  1. *p < 0.0001
  2. a Includes people hospitalised in public hospitals in South Australia only. b Includes depression, schizophrenia, bipolar and anxiety disorders