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A Year in Review: 2020 Gun Deaths in the U.S.

April 28, 2022

This report illustrates the enormous toll gun violence has in the U.S. The report provides an in-depth analysis of the 2020 CDC firearm fatality data, which was made public in December 2021; a look at demographic and state-level geographic differences; and a comparison of other injury fatalities. The report also highlights evidence-based policy recommendations states can implement to help curb gun violence in all its forms.

The role of domestic violence in fatal mass shootings in the United States, 2014–2019

May 31, 2021

BackgroundFatal mass shootings, defined as four or more people killed by gunfire, excluding the perpetrator, account for a small percentage of firearm homicide fatalities. Research has not extensively focused on the role of domestic violence (DV) in mass shootings in the United States. This study explores the role of DV in mass shootings in the United States.MethodsUsing 2014–2019 mass shooting data from the Gun Violence Archive, we indexed our data by year and mass shooting and collected the number of deaths and injuries. We reviewed news articles for each mass shooting to determine if it was 1) DV-related (i.e., at least one victim of a mass shooting was a dating partner or family member of the perpetrator); 2) history of DV (i.e., the perpetrator had a history of DV but the mass shooting was not directed toward partners or family members); or 3) non-DV-related (i.e., the victims were not partners or family members, nor was there mention of the perpetrator having a history of DV). We conducted descriptive analyses to summarize the percent of mass shootings that were DV-related, history of DV, or non-DV-related, and analyzed how many perpetrators died during the incidents. We conducted one-way ANOVA to examine whether there were differences in the average number of injuries or fatalities or the case fatality rates (CFR) between the three categories. One outlier and 17 cases with unknown perpetrators were excluded from our main analysis.ResultsWe found that 59.1% of mass shootings between 2014 and 2019 were DV-related and in 68.2% of mass shootings, the perpetrator either killed at least one partner or family member or had a history of DV. We found significant differences in the average number of injuries and fatalities between DV and history of DV shootings and a higher average case fatality rate associated with DV-related mass shootings (83.7%) than non-DV-related (63.1%) or history of DV mass shootings (53.8%). Fifty-five perpetrators died during the shootings; 39 (70.9%) died by firearm suicide, 15 (27.3%) were killed by police, and 1 (1.8%) died from an intentional overdose.ConclusionsMost mass shootings are related to DV. DV-related shootings had higher CFR than those unrelated to DV. Given these findings, restricting access to guns by perpetrators of DV may affect the occurrence of mass shootings and associated casualties.

Gun Violence in America: An Analysis of 2018 CDC Data

February 1, 2020

This report outlines gun death data from 2018, and shows trends over 10 years. The purpose of the report is to share data in an accessible and user-friendly format. All data were accessed using the Centers for Disease Control's Underlying Cause of death database, part of the Wide-ranging Online Data for Epidemiologic Research (WONDER)database. The Underlying Cause of Death database contains data based on death certificates forUnited States residents. This report is an update to Gun Violence in America: 2018 Data Brief (released January 31, 2020, following the initial release of 2018 mortality data) and includes age-adjusted rates, demographics, and state-by-state breakdowns