title: Gun shows and gun violence: fatally flawed study yields misleading results.
abstract: A widely publicized but unpublished study of the relationship between gun shows and gun violence is being cited in debates about the regulation of gun shows and gun commerce. We believe the study is fatally flawed. A working paper entitled "The Effect of Gun Shows on Gun-Related Deaths: Evidence from California and Texas" outlined this study, which found no association between gun shows and gun-related deaths. We believe the study reflects a limited understanding of gun shows and gun markets and is not statistically powered to detect even an implausibly large effect of gun shows on gun violence. In addition, the research contains serious ascertainment and classification errors, produces results that are sensitive to minor specification changes in key variables and in some cases have no face validity, and is contradicted by 1 of its own authors' prior research. The study should not be used as evidence in formulating gun policy.
authors: Violence Prevention Research Program and the Department of Emergency Medicine, School of Medicine, University of California Davis, Sacramento, CA 95817, USA. gjwintemute@ucdavis.edu
authors: Garen J
authors: GJ
authors: Wintemute
authors: David
authors: D
authors: Hemenway
authors: Daniel
authors: D
authors: Webster
authors: Glenn
authors: G
authors: Pierce
authors: Anthony A
authors: AA
authors: Braga
mesh_terms: D002140:California / Q000453:epidemiology; D003132:Commerce / Q000706:statistics & numerical data*; D005389:Firearms / Q000706:statistics & numerical data*; D006708:Homicide / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D012107:Research Design; D015983:Selection Bias; D013781:Texas / Q000453:epidemiology; D014754:Violence / Q000706:statistics & numerical data*