By Abdul R. Shour, Ronald Anguzu, Yuhong Zhou, Alice Muehlbauer, Adedayo Joseph, Tinuola Oladebo, David Puthoff & Adedayo A. Onitilo

Methods. County-level SDOH data from the Agency for Health Care Research and Quality for 2019 were analyzed, covering 72 Wisconsin counties. The dependent variable was the number of firearm fatalities in each county, used as a continuous variable. The independent variable was residential racial segregation (Dissimilarity Index), defined as the degree to which non-White and White residents were distributed across counties, ranging from 0 (complete integration) to 100 (complete segregation), and higher values indicate greater residential segregation (categorized as low, moderate, and high). Covariates were income inequality ranging from zero (perfect equality) to one (perfect inequality) categorized as low, moderate, and high, community resilience risk factors (low, moderate, and high risks), and rural-urban classifications. Descriptive/summary statistics, unadjusted and adjusted negative binomial regression adjusting for population weight, were performed using STATA/MPv.17.0; P-values ≤ 0.05 were considered statistically significant. ArcMap was used for Geographic Information System analysis.

Results. In 2019, there were 802 firearm fatalities. The adjusted model demonstrates that the risk of firearm fatalities was higher in areas with high residential racial segregation compared to low-segregated areas (IRR.:1.26, 95% CI:1.04–1.52) and higher in areas with high-income inequality compared to areas with low-income inequality (IRR.:1.18, 95% CI:1.00–1.40). Compared to areas with low-risk community resilience, the risk of firearm fatalities was higher in areas with moderate (IRR.:0.61, 95% CI:0.48–0.78), and in areas with high risk (IRR.:0.53, 95% CI:0.41–0.68). GIS analysis demonstrated that areas with high racial segregation also have high rates of firearm fatalities. Conclusion. Areas with high residential racial segregation have a high rate of firearm fatalities. With high income inequality and low community resilience, the likelihood of firearm fatalities increases.

Injury Epidemiology volume 10, Article number: 14 (2023)

By Ye Liu, Michael Siegel, Bisakha Sen 

Introduction: Firearm injury is a major U.S. public health concern. This study aims to evaluate whether the relationship between state firearm laws and state firearm deaths are affected by comparatively lenient firearm laws in neighboring states.

Methods: This observational study used 2000‒2017 data on firearm deaths and firearm laws of the 48 contiguous states of the U.S. (Alaska, Hawaii, and the District of Columbia excluded). The associations among state firearm deaths, state firearm laws, and presence of neighboring states with more lenient laws were analyzed using negative binomial regression models with state- and year-fixed effects. Analyses were conducted in 2019‒2020.

Results: There were 578,022 firearm deaths of all intents during the study period or 11.1 firearm deaths (IQR=8.5-14.0) per 100,000 population. The presence of more state firearm laws was associated with decreased firearm deaths (incident rate ratio=0.991, 95% CI=0.987, 0.996). However, weaker firearm laws in neighboring states correlated with more firearm deaths within a state (incident rate ratio=1.016, 95% CI=1.004, 1.028). Failing to account for weaker laws in neighboring states led to the underestimation of the impact of 1 additional law on state's own firearm deaths (incident rate ratio=0.994, 95% CI=0.989, 0.998 vs 0.991, 95% CI=0.987, 0.996) by approximately 20%.

American Journal of Preventive Medicine: 59(5): 648-657, 2020.

By The U.S. Federal Bureau of Investigation

In 2014, the FBI published its first report, A Study of Active Shooter Incidents Between 2000-2013, and subsequently published annual and bi-annual reports reflecting its continued research into active shooter incidents based on the FBI’s definition of an active shooter. Through its initial research, the FBI identified and reported on 305 active shooter incidents occurring in the United States between 2000-2019. It was later determined there were potentially other active shooter incidents fitting the FBI’s active shooter definition that had not previously been identified. …. As a result, the FBI evaluated and identified an additional 28 active shooter incidents that occurred between 2000 and 2019, bringing the total designated active shooter incidents during this time period to 333. … This valuable information is intended to assist law enforcement and the public in developing strategies to stop active shooter threats, prevent acts of violence, and prepare for, respond to, and recover from such incidents.

Washington, DC: FBI, 2021. 35p.

By Philip Alpers and Amélie Rossetti

Four consecutive formal reports have now found that no Australian State or Territory has at any stage fully complied with the 1996 or 2002 firearm resolutions which collectively formed the National Firearms Agreement. In important areas, State and Territory legislation has been blocked or revised to dilute the effect of the NFA. This report, commissioned and funded by Gun Control Australia, finds that on balance, both non-compliance from day one and two decades of political pressure have steadily reduced restrictions and undermined the NFA’s original intent.

Sydney: Gun Control Australia, 1997. 102p.

Edited by Rajeev Ramchand, Jessica Saunders

This report, part of RAND's Gun Policy in America project, presents a collection of essays that synthesize the available scientific data on topics pertinent to firearm policy in the United States. In particular, the authors examine mass shootings, firearm and ammunition taxes, the effects of the 1996 National Firearms Agreement in Australia, whether mental illness is a risk factor for gun violence, and law enforcement approaches to reduce community gun violence.

Santa Monica, CA: RAND Corporation, 2021. 115p.