Research and Reports
A national gun violence crisis has given rise to a chorus of passionate voices, driven by tragedy, loss, and moral outrage. But passion is not enough. It takes research - objective, credible data - to give substance to the passion to power effective gun violence prevention advocacy. That is what we do.
The Center's Latest Research & Reports
Study of Fatal and Nonfatal Shootings by Police Reveals Racial Disparities, Dispatch Risks
Defending Democracy
Deregulation of public civilian gun carrying and violent crimes
Still Ringing the Alarm: An Enduring Call to Action for Black Youth Suicide Prevention
U.S. Gun Violence in 2021: An Accounting of a Public Health Crisis
National Survey of Gun Policy
Notable Research
Firearm Purchaser Licensing
The association between permit-to-purchase laws and shootings by police
Crifasi CK, Ward J, McCourt AD, Webster D, & Doucette ML. (2023). The association between permit-to-purchase laws and shootings by police. Injury Epidemiology.
Purchaser licensing, point-of-sale background check laws, and firearm homicide and suicide in 4 US states
McCourt A, Crifasi CK, Vernick JS, Kagawa R, Wintemute G & Webster DW. (2020). Purchaser licensing, point-of-sale background check laws, and firearm homicide and suicide in 4 US states, 1985-2017. American Journal of Public Health.
Effects of the repeal of Missouri’s handgun purchaser licensing law on homicides
Webster D, Crifasi CK, & Vernick JS. (2014). Effects of the repeal of Missouri’s handgun purchaser licensing law on homicides. Journal of Urban Health.
Effects of changes in permit-to-purchase handgun laws in Connecticut and Missouri on suicide rates
Crisafi CK, Meyers JS, Vernick JS, and Webster DW. (2015). Effects of changes in permit-to-purchase handgun laws in Connecticut and Missouri on suicide rates. Preventive Medicine.
Firearm Removal Laws
ERPOs in response to threats of mass shootings in 6 U.S. states
Zeoli AM, Frattaroli S, Barnard L, Bowen A, Christy A, Easter M, Kapoor R, Knoepke C, Ma W, Molocznik A, Norko M, Omaki E, Paruk JK, Pear VA, Rowhani-Rahbar A, Schleimer JP, Swanson JW, & Wintemute GJ. (2022). Extreme risk protection orders in response to threats of multiple victim/mass shooting in six U.S. states: A descriptive study. Preventive Medicine.
Removing firearms from those prohibited from possession by domestic violence restraining orders: A survey and analysis of state laws
Zeoli AM, Frattaroli S, Roskam K, Herrera AK. (2017). Removing firearms from those prohibited from possession by domestic violence restraining orders: A survey and analysis of state laws. Trauma, Violence, & Abuse.
Extreme risk protection orders in King County, Washington: The epidemiology of dangerous behaviors and an intervention response.
Frattaroli S, Omaki EC, Molocznik A, Allchin A, Hopkins R, Shanahan S, Levinson A. (2020). Extreme risk protection orders in King County, Washington: The epidemiology of dangerous behaviors and an intervention response. Injury Epidemiology.
Safe and Secure Gun Storage
The 5 A’s of firearm safety counseling: Validating a clinical counseling methodology for firearms in a simulation-based randomized controlled trial
Hoops K, McCourt A, & Crifasi CK. (2022). The 5 A’s of firearm safety counseling: Validating a clinical counseling methodology for firearms in a simulation-based randomized controlled trial. Preventive Medicine Reports.
Storage practices of US gun owners in 2016
Crifasi CK, Doucette ML, McGinty EE, Webster DW, & Barry CL. (2018). Storage practices of US gun owners in 2016. American Journal of Public Health.
Law, ethics, and conversations between physicians and patients about firearms in the home
McCourt A & Vernick J. (2018). Law, ethics, and conversations between physicians and patients about firearms in the home. American Medical Association Journal of Ethics.
Regulating the Public Carry of Firearms
Deregulation of public civilian gun carrying and violent crimes
Doucette, Mitchell L., Cassandra K. Crifasi, Alexander McCourt, Julie Ward, Rebecca L. Fix, and Daniel Webster. (2023). Deregulation of public civilian gun carrying and violent crimes: A longitudinal analysis 1981–2019. Criminology & Public Policy.
Impact of changes to concealed-carry weapons laws on fatal and nonfatal violent crime, 1980–2019
Doucette ML, McCourt AD, Crifasi CK, Webster DW. (2023). Impact of changes to concealed-carry weapons laws on fatal and nonfatal violent crime, 1980–2019. American journal of epidemiology.
Officer-involved shootings and concealed carry weapons permitting laws: analysis of gun violence archive data, 2014–2020
Doucette ML, Ward JA, McCourt AD, Webster D, Crifasi CK. (2022). Officer-involved shootings and concealed carry weapons permitting laws: analysis of gun violence archive data, 2014–2020. Journal of urban health.
Community Violence Intervention
Estimating the Effects of Safe Streets Baltimore on Gun Violence.
Webster DW, Tilchin CG, & Doucette ML. (2023). Estimating the Effects of Safe Streets Baltimore on Gun Violence. Johns Hopkins Center for Gun Violence Solutions. Johns Hopkins Bloomberg School of Public Health.
Research on the effects of hospital-based violence intervention programs: Observations and recommendations
Webster DW, Richardson J, Meyerson N, Vil C, & Topazian R. (2022). Research on the effects of hospital-based violence intervention programs: Observations and recommendations. The ANNALS of the American Academy of Political and Social Science.
Effects of Baltimore’s Safe Streets Program on gun violence: A replication of Chicago’s CeaseFire program
Webster DW, Whitehill JM, Vernick JS, & Curriero FC. (2013). Effects of Baltimore’s Safe Streets Program on gun violence: A replication of Chicago’s CeaseFire program. Journal of Urban Health.
Other Priorities
Alcohol Misuse and Gun Violence
Alcohol Misuse and Gun Violence: An Evidence-Based Approach For State Policy. The Consortium for Risk-Based Firearm Policy and the Center for Gun Violence Solutions at the
Johns Hopkins Bloomberg School of Public Health.
Study of Fatal and Nonfatal Shootings by Police Reveals Racial Disparities, Dispatch Risks
Study of Fatal and Nonfatal Shootings by Police Reveals Racial Disparities, Dispatch Risks.
“National Burden of Injury and Deaths From Shootings by Police in the United States, 2015‒2020” was written by Julie A. Ward, RN, PhD, MN, Javier Cepeda, PhD, MPH, Dylan B. Jackson, PhD, MS, Odis Johnson Jr, PhD, Daniel W. Webster, ScD, MPH, and Cassandra K. Crifasi, PhD, MPH.