By Mitchell L. Doucette &Christa Green & Jennifer Necci Dineen & David Shapiro & Kerri M. Raissian

Over the past decade, large urban counties have implemented ShotSpotter, a gun fire detection technology, across the USA. It uses acoustic listening devices to identify discharged firearms’ locations. We examined the effect of ShotSpotter with a pooled, cross sectional time-series analysis within the 68 large metropolitan counties in the USA from 1999 to 2016. We identified ShotSpotter implementation years through publicly available media. We used a Poisson distribution to model the impact of ShotSpotter on firearm homicides, murder arrests, and weapons arrests. ShotSpotter did not display protective effects for all outcomes. Counties in states with permit-to-purchase firearm laws saw a 15% reduction in firearm homicide incidence rates; counties in states with right-to-carry laws saw a 21% increase in firearm homicide incidence rates. Results suggest that implementing ShotSpotter technology has no significant impact on firearm related homicides or arrest outcomes. Policy solutions may represent a more cost-effective measure to reduce urban firearm violence.

Journal of Urban Health, 2021.

By Roberto Uchôa de Oliveira Santos

In recent decades, the global debate on gun control has been prominent, with many countries adopting more restrictive policies. Brazil followed this trend by implementing stringent measures in 2003; however, the presidency of Jair Bolsonaro in 2019 introduced normative changes aimed at facilitating public access to firearms and ammunition. Throughout his term, the legal firearms market doubled, allowing access to weaponry previously restricted to the general public. The analyzed hypothesis suggests that these normative changes, especially those related to the quantity and authorization of acquisition of previously restricted firearms, altered the types of firearms in circulation, strengthening the interaction between legal and illegal markets. Using data from the mandatory firearms re-registration, a total of 962,782 firearms were analyzed. The assessment of the increase in circulation of these firearms in the illegal market was conducted through the analysis of seizures in the states of Rio de Janeiro and São Paulo, revealing a significant growth in seizures of these types of firearms, possibly correlated with the increase in their circulation. Three police investigations were selected to exemplify how the connection between markets intensified, allowing criminals to obtain firearms in the legal market that were previously only accessible through international trafficking or diversion from state agencies.

Journal of Illicit Economies and Development, 6(1): pp. 16–29. 2024

By Nicole Kravitz-Wirtz , Rocco Pallin , Matthew Miller , Deborah Azrael , Garen J Wintemute

Objective: To describe the prevalence of and factors associated with firearm ownership; the types, subtypes, and quantity of firearms owned; and when, where and why firearms were acquired in California.

Methods: A cross-sectional analysis of a state-representative, probability-based, internet survey of California adults was conducted in September-October 2018 (n=2558; completion rate 49%). Household firearm ownership was ascertained for all respondents; personal firearm ownership was ascertained only among respondents who reported living in a home with firearms; and information on the types and quantity of firearms owned and details about recently acquired firearms came from firearm owners only.

Findings: Roughly one in four (25%, 95% CI 22% to 28%) California adults live in a home with a firearm, including 4.2 million adults-14% (95% CI 13% to 16%) of the adult population who personally own a firearm. These owners collectively own an estimated 19.9 million firearms (8.9 million handguns). Approximately half (48%, 95% CI 34% to 61%) of the firearm stock in California is owned by the 10% (95% CI 6% to 14%) of owners who own 10 or more firearms, though more than half (54%, 95% CI 47% to 62%) of owners in the state own only one or two firearms. Most (69%, 95% CI 63% to 75%) owners purchased their last firearm from a firearm retailer, usually a handgun purchased primarily for protection against people.

Conclusion: This study provides the most detailed and up-to-date information available on firearm ownership and acquisition in California. Results can inform firearm violence prevention efforts and public health, safety, and policy development in California and nationally.

Injury Prevention, Volume 26, Issue 6, 2020.

By Garen J. Wintemute 

Inter-related sustained upward trends in firearm purchasing, violence, and political extremism are converging to put the USA at risk for disaster and threaten our future as a democracy. This narrative review provides a critical assessment and call to action. It explores each trend separately, considers the effects of their likely and imminent convergence, and suggests possibilities for collective and individual action to prevent or at least reduce those effects.

Injury Epidemiology volume 8, Article number: 64 (2021)

By Marian E Betz , Lauren A Rooney , Leslie M Barnard , Bonnie J Siry-Bove , Sara Brandspigel , Megan McCarthy , Kate Simeon , Lauren Meador , Frederick P Rivara , Ali Rowhani-Rahbar , Christopher E Knoepke

Background: Reducing firearm access during times of risk is a key component of suicide prevention, including the person at risk voluntarily, temporarily storing firearms outside the home. However, this approach relies on the participation of storage providers (ranges/retailers and law enforcement agencies (LEAs)). Our objective was to describe stakeholders' views and experiences surrounding voluntary, temporary out-of-home firearm storage for suicide prevention.

Method: We conducted individual interviews with (1) firearm ranges/retailers; (2) LEAs (in Colorado or Washington State); and (3) state/national organizations involved in policy development or enactment; public health; or firearm rights. Transcripts were analyzed using a team-based mixed inductive-deductive approach.

Results: Across 100 interviews (October-May 2021), potential storage providers were supportive of voluntary storage programs, often reporting a desire to help their customers and community. However, potential storage suppliers cited civil liability, regulatory, and legal concerns associated with storing and/or returning firearms (to people who had previously expressed suicide risk). Stakeholders offered suggested strategies meant to address liability and increase storage accessibility.

Conclusions: Understanding stakeholder views supports the development of acceptable, feasible programs for out-of-home firearm storage during times of suicide risk. Clarification of existing regulations or the creation of new policies is necessary to address potential providers' concerns.

Suicide and Life-Threatening BehaviorVolume 52, Issue 4Aug 2022Pages597-831