Emergency Department Visits and Injury Hospitalizations for Female and Male Victims and Perpetrators of Intimate Partner Violence

Table 4

Comparing age-adjusted expected and actual visit rates among IPV-involved individuals.

Emergency department visits	Age-adjusted expected visits by IPV population (,937)	Actual visits by IPV population (,937)	Victim/perpetrator status during 2010
			Victim only (,419)	Perpetrator only (,387)	Bidirectional ()
Crude # of visits	1,292 visits	5,285 visits	2,891 visits	1,909 visits	485 visits
Rate of visits (CI)	44.0 (41.6, 46.5)	179.9 (175.1, 184.9)	203.7 (196.4, 211.3)	137.6 (131.5, 144.0)	370.2 (338.0, 404.7)
Relative Risk	—	4.1 RR	4.6 RR	3.1 RR	8.4 RR
Rate of visits by gender (CI)
Female	53.3 (49.6, 57.2)	238.6 (230.7, 246.7)	236.3 (227.2, 245.6)	187.7 (172.7, 203.6)	413.7 (368.4, 463.1)
Male	37.0 (33.9, 40.3)	128.7 (122.8, 134.7)	109.9 (98.2, 122.5)	122.5 (116.0, 129.3)	315.5 (271.5, 364.7)
Injury-related hospitalizations	Expected # of visits by IPV Population (,937)	Actual # of visits by IPV population (,937)	Victim/perpetrator status during 2010
			Victim only (,419)	Perpetrator only (,387)	Bidirectional ()
Crude # of visits	5 visits	20 visits	2 visits	13 visits	5 visits
Rate of visits (CI)	17.0 (5.5, 39.7)	68.1 (41.6, 105.2)	14.1 (1.7, 50.9)	93.7 (49.9, 160.3)	381.7 (123.9, 890.7)
Relative Risk	—	4.0 RR	0.8 RR	5.5 RR	22.5 RR

Rate per 100 persons. Rate calculation = [(# visits)/(# in population)] 100.
Relative Risk compared to expected number of visits: [actual # visits/expected # of visits].
Rate per 10,000 persons. Rate calculation = [(# visits)/(# in population)] 10,000.
Note: hospitalization cell sizes too small to further stratify by gender.
Boldface indicates statistical significance ().