Table III.

Factors associated with emergency department visits

	Adjusted rate ratio (95% CI*)
Index burn center care	0.61 (0.52–0.72)
Age group
16–29 y	Ref
30–44 y	0.67 (0.58–0.76)
45–59 y	0.70 (0.58–0.83)
60–75 y	0.54 (0.43–0.68)
≥75 y	0.55 (0.38–0.81)
Female	0.96 (0.81–1.13)
Comorbidity band†
1 (Lowest)	Ref
2	1.55 (1.11–2.17)
3	2.03 (1.51–2.72)
4	4.08 (3.00–5.56)
5 (Highest)	9.17 (6.53–12.89)
% Total body surface area burn
<20	Ref
20–39	0.86 (0.76–0.98)
40–59	1.16 (0.79–1.70)
≥60	0.89 (0.71–1.12)
Inhalation injury	0.97 (0.83–1.14)
Burn mechanism
Flame	Ref
Contact	0.78 (0.70–0.88)
Electrical	0.72 (0.52–1.00)
Index discharge disposition
Home	Ref
Home with support	0.96 (0.81–1.15)
Rehabilitation or long-term care	1.28 (1.05–1.55)
Other inpatient	1.21 (0.91–1.60)
Other	1.32 (0.84–2.08)

^*Confidence interval.

^†Measure of comorbidity burden based on healthcare utilization in 2 years prior to injury.