Table 4.

Patient cohorts before and after the propensity-score matching.

	Before matching				After matching
Variables	Death n = 311	Survival n = 2487	OR (95%CI)	P	Death n = 181	Survival n = 181	OR (95%CI)	P
Sex
Male	205 (65.9)	1659 (66.7)	1.0 (0.75–1.24)	0.780	133 (73.5)	133 (73.5)	1.0 (0.63–1.60)	1.000
Female	106 (34.1)	828 (33.3)	1.0 (0.81–1.33)	0.780	48 (26.5)	48 (26.5)	1.0 (0.63–1.60)	1.000
Age	56.2 ± 21.4	48.9 ± 21.6	–	<0.001	52.9 ± 21.5	52.9 ± 21.0	–	0.980
Co-morbidity
DM	40 (12.9)	331 (13.3)	1.0 (0.68–1.37)	0.826	13 (7.2)	13 (7.2)	1.0 (0.45–2.22)	1.000
HTN	86 (27.7)	606 (24.4)	1.2 (0.91–1.55)	0.205	41 (22.7)	41 (22.7)	1.0 (0.61–1.64)	1.000
CAD	21 (6.8)	73 (2.9)	2.4 (1.45–3.95)	<0.001	6 (3.3)	6 (3.3)	1.0 (0.32–3.16)	1.000
CHF	3 (1.0)	13 (0.5)	1.9 (0.53–6.54)	0.410	0 (0.0)	0 (0.0)	–	–
CVA	15 (4.8)	94 (3.8)	1.3 (0.74–2.25)	0.370	3 (1.7)	3 (1.7)	1.0 (0.20–5.02)	1.000
ESRD	2 (0.6)	1 (0.0)	16.1 (1.46–177.97)	0.034	0 (0.0)	0 (0.0)	–	–
SBP mmHg	141.9 ± 60.1	146.6 ± 38.1	–	0.184	150.9 ± 49.5	149.2 ± 39.6	–	0.710
GCS	6.8 ± 4.4	12.5 ± 3.8	–	<0.001	8.1 ± 4.8	8.0 ± 4.8	–	0.710
AIS, n (%)
Head/Neck	275 (88.4)	2026 (81.5)	1.7 (1.21–2.50)	0.002	161 (89.0)	161 (89.0)	1.0 (0.52–1.93)	1.000
Face	40 (12.9)	635 (25.5)	0.4 (0.31–0.61)	<0.001	20 (11.0)	20 (11.0)	1.0 (0.52–1.93)	1.000
Thorax	77 (24.8)	810 (32.6)	0.7 (0.52–0.89)	0.005	43 (23.8)	43 (23.8)	1.0 (0.62–1.62)	1.000
Extremity	85 (27.3)	1020 (41.0)	0.5 (0.42–0.70)	<0.001	51 (28.2)	51 (28.2)	1.0 (0.63–1.58)	1.000
ISS	25 (25–34)	19 (16–24)	–	<0.001	25 (20–29)	25 (18–29)	–	0.076
Polytrauma	79 (25.4)	615 (24.7)	1.0 (0.79–1.36)	0.795	45 (24.9)	51 (28.2)	0.5 (0.16–1.32)	0.147