Long-term disabilities after traumatic head injury (THI): a retrospective analysis from a large level-I trauma center in Saudi Arabia

Table 1 Characteristics of the study population by disability status

Variable	Disabled	Non-disabled	All patients	P-value
Variable	N = 84	N = 174	N = 258	P-value
Age categorized [years] %
16–25	53.57	71.26	65.50	<.01^a
26–45	29.76	22.99	25.19
≥46	16.67	5.75	9.30
Male %	91.67	93.10	92.64	0.67^a
Education %
Below High school	34.94	10.40	18.36	<.01^a
High school	46.99	58.96	55.08
Above High school	18.07	30.64	26.56
Mechanism of injury %
MVC	92.86	90.80	91.47	0.58^a
Others	7.14	9.20	8.53
ICU %	67.86	56.32	60.08	0.07^a
Surgery %	32.14	26.44	28.29	0.34^a
Years since injury, (mean ± SD), median	(6.5 ± 2.7), 6	(6.9 ± 2.6), 6	(6.8 ± 2.6), 6	0.24^
RTS^b, (mean ± SD), median	(9.9 ± 1.7), 10	(10.7 ± 1.3), 11	(10.4 ± 1.5), 11	<.01^{^}
ISS^c, (mean ± SD), median	(16.7 ± 9.3), 17	(13.3 ± 9.1), 12	(14.4 ± 9.3), 13	<.01^{^}
Length of stay, median	40	15	22

^aChi-2 test; ^ t-student test, ^bRTS Triage-Revised Trauma Scale (higher indicates better physiological status), ^cISS Injury Severity Score (higher indicates worst injuries)