Table 2.

Hospital characteristics associated with truama center need.

	All trauma centers			Level I and II trauma centers			Level III and IV trauma centers
	f-value	t-value	Probability	f-value	t-value	Probablity	f-value	t-value	Probability
ΔTrauma center need	19.65	-	<0.001**	3.79	-	<0.001**	2.99	-	<0.01**
Infrastructure
Total beds	-	−0.27	0.789	-	−0.59	0.557	-	1.34	0.182
Intensive care unit beds	-	1.62	0.107	-	1.8	0.073	-	0.74	0.461
Trauma designation level
Level I and II	-	8	<0.0001**	-	-	-	-	-	-
Level III and IV	-	-	-	-	-	-	-	-	-
Hospital type
Non profit vs. for profit	-	−1.68	0.094	-	−2.78	0.0058**	-	0.64	0.526
Patient characteristics
Percent transferred in	-	2.75	0.0061**	-	3.16	0.0017**	-	1.68	0.096
Percent insured	-	−2.11	0.0356**	-	−2.95	0.0034**	-	−0.03	0.979
Staffing resources
Number of neurosurgeons	-	0.87	0.383	-	0.05	0.962	-	1.15	0.253
Number of orthopedic surgeons	-	0.71	0.477	-	1.1	0.272	-	−0.84	0.401
Number of trauma surgeons	-	1.71	0.087	-	0	0.999	-	2.02	0.0464**

^ΔDependent variable of the models. Inference statistics for Trauma Center Need are a summary of the entire model(s).

^**Significant at the 0.05 probability level or lower.