Table 1.

Characteristics and Outcomes of Older Adult Assault Victims (aged ≥60) Treated at U.S. Trauma Centers from 2008–2012 in Comparison to Older Adult Unintentional Injury Victims and Younger Assault Victims (aged 18–59)

	Older Adult Assault (n=3,564)	Older Adult Unintentional Injury (n=200,194)	P value	Younger Adult Assault (n=94,511)	P value
Male gender	81%	47%	<0.001	88%	<0.001
Age (years), mean ± SD	67 ± 7	74 ± 9	0.002	33 ± 11	--
Race			<0.001		<0.001
White	52%	83%		35%
Black or African	30%	6%		41%
American
Other race	18%	11%		24%
Drug and/or alcohol use	30%	9%	<0.001	42%	<0.001
Any alcohol use	21%	5%	<0.001	31%	<0.001
Any drug use	13%	5%	<0.001	21%	<0.001
Functionally dependent	0.3%	2%	<0.001	0.1%	0.02
health status
≥3 concomitant medical Conditions	11%	18%	<0.001	2%	<0.001
Injury severity score (ISS), median (IQR)	9 (4 – 16)	9 (4 – 16)	0.51	6 (2 – 13)	<0.001
Severe trauma (ISS≥16)	34%	29%	<0.001	25%	<0.001
In-hospital mortality	8%	7%	0.33	5%	<0.001
Hospital length of stay (days), median (IQR)	3 (2 – 8)	4 (3 – 8)	<0.001	2 (1 – 5)	<0.001
ICU stay	39%	34%	<0.001	28%	<0.001
ICU length of stay (days), median (IQR)	3 (2 – 7)	3 (2 – 6)	0.09	2 (1 – 5)	<0.001
Number of injuries, median (IQR)	3 (2 – 5)	2 (1 – 4)	<0.001	3 (2 – 4)	<0.001
Surgeries performed
Laparotomy	6%	1%	<0.001	10%	<0.001
Thoracotomy	1%	0.3%	<0.001	2%	0.01
Craniotomy	0.6%	0.2%	<0.001	0.4%	0.09
Type of injury			<0.001		<0.001
Blunt	51%	96%		36%
Burn	0.3%	1%		0.3%
Penetrating	32%	0.7%		56%
Other/unspecified	15%	2%		8%
Traumatic brain injury	34%	34%	0.57	20%	<0.001
Body region(s) injured			<0.001		<0.001
Head	27%	25%		19%
Face	30%	12%		24%
Neck	2%	0.3%		2%
Thorax	11%	12%		14%
Abdomen	7%	3%		13%
Spine	3%	11%		2%
Upper extremity	11%	14%		11%
Lower extremity	6%	19%		9%
Unspecified	3%	3%		3%
≥3 body regions injured	60%	46%	<0.001	53%	<0.001
Trauma-associated diagnosis(es)			<0.001		<0.001
Fractures	37%	53%		30%
Internal organ	28%	26%		28%
Open wounds	28%	13%		34%

SD denotes standard deviation; IQR, interquartile range; ICU, intensive care unit.