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Table 1 Baseline demographic factors for those with self-harm, assault and unintentional burns, Western Australia, 1980–2012

From: A population-based comparison study of the mental health of patients with intentional and unintentional burns

Characteristics Self-harm burns (N = 360), n (%) Assault burns (N = 206), n (%) Unintentional burns (N = 30,431), n (%) p value
Gender
 Male 160 (44.4) 106 (51.5) 20,957 (68.9) < 0.001
 Female 200 (55.6) 100 (48.5) 9468 (31.1)  
Age (years)
 0–14 7 (1.9) 15 (7.3) 10,414 (34.2) < 0.001
 15–24 115 (31.9) 45 (21.8) 5932 (19.5)  
 25–34 106 (29.4) 67 (32.5) 4752 (15.6)  
 35–44 71 (19.7) 54 (26.2) 3413 (11.2)  
 45–54 36 (10.0) 18 (8.7) 2230 (7.3)  
 55–64 14 (3.9) 5 (2.4) 1448 (4.8)  
 65+ 11 (3.1) 2 (1.0) 2242 (7.4)  
Aboriginality
 Aboriginal 40 (11.1) 108 (52.4) 4333 (14.2) < 0.001
 Non-Aboriginal 320 (88.9) 98 (47.6) 26,098 (85.8)  
Social disadvantage quintiles*
 Quintile 1 (most disadvantaged) 86 (24.1) 81 (40.5) 6412 (21.4) < 0.001
 Quintile 2 84 (23.5) 47 (23.5) 9747 (32.6)  
 Quintile 3 66 (18.5) 29 (14.5) 6259 (20.9)  
 Quintile 4 55 (15.4) 19 (9.5) 3759 (12.6)  
 Quintile 5 (least disadvantaged) 66 (18.5) 24 (12.0) 3767 (12.6)  
Remoteness**
 Major city 266 (74.5) 91 (44.8) 15,453 (51.5) < 0.001
 Inner regional 36 (10.1) 11 (5.4) 3313 (11.0)  
 Outer regional 33 (9.2) 26 (12.8) 4899 (16.3)  
 Remote 9 (2.5) 14 (6.9) 3411 (11.4)  
 Very remote 13 (3.6) 61 (30.1) 2937 (9.8)  
Health status
 Any co-morbidity (CCI ≥ 1) 59 (16.4) 31 (15.1) 3041 (10.0) < 0.001
  1. *Socio-Economic Index for Areas (SEIFA) socio-economic disadvantage quintiles; missing values 1.0% burn, 0.5% no injury
  2. **Accessibility Remoteness Index of Australia, revised version (ARIA+) remoteness classification; missing values 0.6% burn, 0.8% no injury
  3. Co-morbidity based on derived Charlson Comorbidity Index (CCI) using 5-year lookback