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Table 3 Adjusted incidence rate ratios (IRR) and 95% confidence intervals (CI) for post-injury admissions for mental health conditions comparing those with burn injury with non-injured, Western Australia, 1980–2012

From: Long-term mental health outcomes after unintentional burns sustained during childhood: a retrospective cohort study

Characteristics Adjusted IRRd 95% CI
Burn 2.55 2.07–3.15
Female 1.79 1.44–2.22
Indigenous (yes vs no) 2.77 2.07–3.70
Age at index event
 0–4 years (ref) 1.00
 5–9 years 1.65 1.22–2.24
 10–14 years 4.31 3.19–5.82
 15–17 years 4.39 3.16–6.09
Social disadvantagea (increasing advantage) 1.10 1.01–1.19
Remotenessb (increasingly remote) 1.06 0.97–1.15
Year of index admission (increasing) 0.93 0.92–0.95
Previous mental health admission 56.30 22.00–144.05d
Prior self-harm admission 5.83 2.14–15.89d
Prior drug/alcohol admission 2.36 0.94–5.93d
Pre-existing comorbiditiesc 2.26 1.28–5.93
  1. aSocio-Economic Index for Areas (SEIFA) socio-economic disadvantage
  2. bAccessibility Remoteness Index of Australia, revised version (ARIA+) remoteness classification
  3. cComorbidity derived using Charlson Comorbidity Index (CCI) 5-year look-back period
  4. dWide 95% CI related to small numbers with prior admissions