@ETpro
Charles C. Branas, PhD, Associate Professor of Epidemiology in Biostatistics and Epidemiology, University of Pennsylvania – School of Medicine, states:
“Overall, Branas’s study found that people who carried guns were 4.5 times as likely to be shot and 4.2 times as likely to get killed compared with unarmed citizens. When the team looked at shootings in which victims had a chance to defend themselves, their odds of getting shot were even higher.”
http://www.newscientist.com/article/dn17922-carrying-a-gun-increases-risk-of-get-shot-and-killed.html
http://www.med.upenn.edu/apps/faculty/index.php/g275/p18132
American Journal of Public Health: http://ajph.aphapublications.org/cgi/content/abstract/AJPH.2008.143099v1
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“The issue of “home defense” or protection against intruders or assailants may well be misrepresented. A study of 626 shootings in or around a residence in three U.S. cities revealed that, for every time a gun in the home was used in a self-defense or legally justifiable shooting, there were four unintentional shootings, seven criminal assaults or homicides, and 11 attempted or completed suicides (Kellermann et al, 1998). Over 50% of all households in the U.S. admit to having firearms (Nelson et al, 1987). In another study, regardless of storage practice, type of gun, or number of firearms in the home, having a gun in the home was associated with an increased risk of firearm homicide and suicide in the home (Dahlberg, Ikeda and Kresnow, 2004). Persons who own a gun and who engage in abuse of intimate partners such as a spouse are more likely to use a gun to threaten their intimate partner. (Rothman et al, 2005). Individuals in possession of a gun at the time of an assault are 4.46 times more likely to be shot in the assault than persons not in possession (Branas et al, 2009). It would appear that, rather than being used for defense, most of these weapons inflict injuries on the owners and their families.”
http://library.med.utah.edu/WebPath/TUTORIAL/GUNS/GUNSTAT.html
http://faculty.jhsph.edu/default.cfm?faculty_id=739
http://www.researchprofiles.collexis.com/jhu/expert.asp?u_id=970
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And, just for fun:
Children Killed by Guns
How many children are killed by guns is a complicated question. The answer depends on a number of factors, including age range, and whether homicide, suicide and/or unintentional-injuries are included in the figure. If the age range is 0–19 years, and homicide, suicide, and unintentional injuries are included, then the total firearms-related deaths for 2006 is 3,218 . This is equivalent to nearly 9 deaths per day, a figure commonly used by journalists. The 3,142 firearms-related deaths for age group 0–19 breaks down to 154 unintentional, 763 suicides, and 2,225 homicides, 42 for which the intent could not be determined, and 34 due to legal intervention. Viewed by age group, 63 of the total firearms-related deaths were of children under 5-years-old, 346 were children 5–14 years old, and 2,809 were 15–19 years old.
http://www.nsc.org/news_resources/Resources/res_stats_services/Pages/FrequentlyAskedQuestions.aspx#question12