Table 1. Baseline characteristics by hemodynamic status.

		Hemodynamic status
		Unstable		Stable		p-value
		n	value	n	value
Age		63	49.4±21.4	48	53.2±22.0	0.37
Age <45			33 (52.4%)		29 (60.4%)	0.44
Sex	Male		48 (76.2%)		30 (62.5%)	0.14
Type of trauma	Blunt		60 (95.2%)		47 (97.9%)	0.63
Prehospital Trauma Index		46	4.9±3.8	37	2.5±3.2	<0.01
Injury Severity Score		63	21.7±12.7	47	17.8±10.4	0.08
Glasgow Coma Scale		63	10.7±4.5	48	12.5±3.8	0.02
Severe TBI*			22 (34.9%)		11 (22.9%)	0.21
Intoxication**			18 (28.6%)		12 (25.0%)	0.83
Past medical history	Hypertension		18 (28.6%)		14 (29.2%)
	Chronic renal failure		4 (6.3%)		2 (4.2%)
	Coronary artery disease		9 (14.3%)		6 (12.5%)
	Peripheral vascular disease		3 (4.8%)		3 (6.3%)
	Congestive heart failure		0 (0.0%)		1 (2.1%)
	Diabetes		10 (15.9%)		6 (12.5%)
Transfer from primary or secondary referring hospital			20 (31.8%)		9 (18.8%)	0.13

Categorical variables are presented as count (%), continuous variables as mean±SD. p-values comparing the eligible to non-eligible patients are by Fisher's exact test and by Student's t-test for categorical and continuous variables respectively.

*TBI: traumatic brain injury; severe TBI is defined as Glasgow Coma Scale ≤8

**illicit drugs or alcohol