Table 1

Review of Statistics in Studies of Murder-Suicide

Study	Reported Incidence	Murder-Suicide Incidents, n	Date Range	Location
Marzuk et al.⁵	0.2–0.3^*	11 incidents; 22 deaths	1 week in 1989	United States
Cohen et al.¹³	0.3–0.7 in <55-year age group^*	89 incidents in <55-year group	1988–1994	Southeast and West Central Florida
Hannah et al.⁹	0.34 and 0.38^*	53 incidents;	1980-1984
		116 deaths	1990–1994
Hanzlick and Koponen¹⁰	0.46^*	12 incidents; 26 deaths	1988–1991	Fulton County, Georgia
Campanelli and Gilson¹¹	0.26^*	16 incidents	1995–2000	New Hampshire
Comstock et al.¹²	0.3^*	73 incidents; 162 deaths	1994–2001	Oklahoma
Bossarte et al.¹⁴	0.23^*	65 homicides;	2003	NVDRS
	0.238^*	144 homicides	2004	(multiple states)

* Per 100,000.