Table 4.

Regression model of cost of youth with minor to moderate injuries

		Parameter estimate	P value	Percentage change to cost
Patient factors	Age	0.01	0.20
	Female	0.08	0.86
	Black	−0.04	0.41
	Other race	0.06	0.36
	Hispanic*	0.11	0.04	11.4
	Uninsured	−0.04	0.58
	Medicaid	−0.03	0.45
	Time*	0.02	0.0002	16.1
	ICISS	−2.00	0.06
	Overtriage*	0.84	<0.0001	131.8
Nature of injury	Fractures of the skull, neck, or trunk	0.13	0.06
(Reference: other fractures)	Internal injury*	0.20	0.001	22.0
	Open wound	0.09	0.36
	Burns	0.004	0.99
	Other injury*	0.22	0.02	24.4
Mechanisms of injury	Cut	−0.26	0.10
(Reference: falls)	Fire	0.08	0.78
	Firearm*	0.33	0.03	38.4
	Motor vehicle traffic*	0.30	<0.0001	35.5
	Transport	0.09	0.15
	Natural/environmental	−0.04	0.69
	Struck by/against	0.06	0.34
	Other mechanism	−0.09	0.50
Hospital factors	Teaching hospital*	0.23	<0.0001	25.5
(Reference: not for profit)	For-profit hospital	0.02	0.76
	Public hospital	−0.05	0.43

*Statistically significant at the α=0.05 level.

ICISS, ICD-9-CM Injury Severity Score.