Table 1. Patient characteristics (n = 94,655).

	Non-conference Admissions (N = 82,399)	Conference Admissions (N = 12,256)	P-value*
Age (years), %			0.50
16–25	17.4	17.5
26–35	12.7	12.8
36–55	26.3	26.2
56–65	13.3	12.8
66–75	10.1	10.2
76–85	12.2	12.4
> 85	5.6	6.0
Not Recorded/Unknown	2.3	2.2
Female (%)	35.8	35.6	0.77
Race (%)			0.07
White	72.2	73.0
African American	13.5	13.1
Asian	1.7	1.5
Other	9.5	9.0
Not Recorded/Unknown	3.2	3.4
Initial Systolic Blood pressure in Emergency Dept., mean (SD)	138 (30)	139 (30)	0.11
Motor component of the Glasgow Coma Scale (%)			0.10
1	8.4	8.3
2	0.4	0.3
3	0.5	0.5
4	1.7	1.4
5	3.3	3.6
6	82.8	83.1
Not Recorded/Applicable	3.0	3.0
Patient injury severity using ISS-98, mean (SD)	16.7 (9.0)	16.7 (8.8)	0.97
Mechanism of Injury (%)			0.53
Pedestrian struck	6.3	6.1
Motor vehicle crash	24.8	24.6
Cut/pierce	2.9	2.6
Fall	42.1	42.5
Firearm	4.8	4.9
Motorcyclist	6.3	6.5
Pedestrian other	0.4	0.4
Other	12.6	12.5
Transferred from other facility (%)	31.7	31.2	0.50
Teaching status (%)			0.06
Community	33.2	34.3
Non-teaching	6.4	6.2
University	60.4	59.6
American College of Surgeons trauma verification level (%)
I	55.7	55.5	0.11
II	19.5	20.3
Not applicable	24.8	24.3
State trauma verification level			0.43
I	65.2	64.5
II	16.7	17.2
Not applicable	17.8	18.0
Payer status			0.64
Private/commercial	25.4	24.8
Medicaid	9.1	9.1
Medicare	26.5	26.6
Other	33.6	34.0
Not known/not recorded	5.4	5.5

* Chi-square used to calculate p-value for categorical variables, and Student t-test used to calculate p-value for continuous variables