Archives

Systematic review of the impact of interventions changing access to lethal means on suicide attempts and deaths

Objective

The study objective was to examine if interventions changing access to lethal means are associated with changes in suicide deaths and/or attempts by conducting a systematic review of controlled intervention studies.

Methods

Authors searched key databases (PubMed, PsycInfo, CINAHL) from inception to March 2024 for longitudinal controlled intervention studies with at least one contemporaneous comparator group evaluating the impact of interventions changing access to lethal means on suicide attempts and/or deaths in a primarily adult population. Reviewers dually screened articles, then extracted study characteristics and assessed methodological quality.

Results

Researchers screened 8522 studies and 36 articles met eligibility for inclusion. Most studies evaluated the impact of population-level firearm interventions on suicide deaths and found that stricter regulations were associated with a small reduction, if any, in total and/or firearm-specific suicide deaths. The ecological level of analysis precluded individual-level causal inference. Findings within interventions targeting methods other than firearms were limited, mixed and/or inconclusive. Notably, no high-quality randomised controlled trials (RCTs) were identified that met our eligibility criteria.

Conclusion

Future studies should use an RCT design or advanced statistical causal inference techniques to further elucidate the effectiveness of these interventions on suicide deaths and/or attempts.

PROSPERO registration number

CRD42022364775.

The Association of Firearm Caliber With Likelihood of Death From Gunshot Injury in Criminal Assaults

Importance  A foundational issue in firearms policy has been whether the type of weapon used in an assault affects the likelihood of death.

Objective  To determine whether the likelihood of death from gunshot wounds inflicted in criminal assaults is associated with the power of the assailant’s firearm as indicated by its caliber.

Design, Setting, and Participants  Cross-sectional study with multivariate analysis of data on shooting cases extracted by the authors from police investigation files for assaults that took place in Boston, Massachusetts, between January 1, 2010, and December 31, 2014. These data were analyzed between October 1, 2017, and February 18, 2018. In all cases the victim sustained 1 or more gunshot wounds in circumstances that the Boston Police Department deemed criminal. The working sample included all 221 gun homicides and a stratified random sample of 300 nonfatal cases drawn from the 1012 that occurred during the 5-year period. Seven nonfatal cases were omitted because they had been misclassified.

Exposures  The primary source of variation was the caliber of the firearm used to shoot the victim.

Main Outcomes and Measures  Whether the victim died from the gunshot wound(s).

Results  The final sample of 511 gunshot victims and survivors (n = 220 fatal; n = 291 nonfatal) was predominantly male (n = 470 [92.2%]), black (n = 413 [80.8%]) or Hispanic (n = 69 [13.5%]), and young (mean [SD] age, 26.8 [9.4] years). Police investigations determined firearm caliber in 184 nonfatal cases (63.2%) and 183 fatal cases (83.2%). These 367 cases were divided into 3 groups by caliber: small (.22, .25, and .32), medium (.38, .380, and 9 mm), or large (.357 magnum, .40, .44 magnum, .45, 10 mm, and 7.62 × 39 mm). Firearm caliber had no systematic association with the number of wounds, the location of wounds, circumstances of the assault, or victim characteristics, as demonstrated by χ2 tests of each cluster of variables and by a comprehensive multinomial logit analysis. A logit analysis of the likelihood of death found that compared with small-caliber cases, medium caliber had an odds ratio of 2.25 (95% CI, 1.37-3.70; P = .001) and large caliber had an odds ratio of 4.54 (95% CI, 2.37-8.70; P < .001). Based on a simulation using the logit equation, replacing the medium- and large-caliber guns with small-caliber guns would have reduced gun homicides by 39.5%.

Conclusions and Relevance  Firearms caliber was associated with the likelihood of death from gunshot wounds in criminal assault. Shootings with larger-caliber handguns were more deadly but no more sustained or accurate than shootings with smaller-caliber handguns. This conclusion is of direct relevance to the design of gun policy.

The Effect of Gun Availability on Violent Crime Patterns

Social scientists have started to find answers to some of the questions raised in the ongoing debate over gun control. The basic factual issue in this debate concerns the effect of gun availability on the distribution, seriousness, and number of violent crimes. Some evidence is available on each of these dimensions of the violent crime problem. The distribution of violent crimes among different types of victims is governed in part by the “vulnerability pattern” in weapon choice. The seriousness of robbery and assault incidents is influenced by weapon type, as indicated by the objective dangerousness and instrumental violence pattern. A reduc tion in gun availability would cause some weapon substitution and probably little change in overall robbery and assault rates—but the homicide rate would be reduced.

https://rockinst.org/issue-area/schools-and-gun-violence-what-do-we-know-about-the-prevalence-and-effects/

On April 11, 2022, the Biden administration announced the submission of new rules issued by the United States Department of Justice (DOJ), more specifically the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF), addressing the proliferation of ghost guns across the nation. This announcement came almost exactly one year after the president announced multiple executive actions designed to reduce gun violence, including requiring the DOJ and ATF to develop the new rules. These rules included qualifying ghost gun kits as “firearms” in line with the Gun Control Act of 1968, thereby requiring that any such kits have serial numbers on the firearm components. They also included a ban on certain forms of ghost guns, and a requirement that both commercial manufacturers and sellers of permitted kits be licensed. After federal judges in Texas and North Dakota decided that the new rules did not violate the Second Amendment in response to petitions for injunctive relief, they took effect on August 24, 2022.

What exactly are ghost guns, and what challenges do they pose? Moreover, what do these new rules do to contribute to a solution to such challenges? Privately made firearms (PMFs), which have become informally known as “ghost guns” due to their virtually untraceable nature, function similar to firearms wholly constructed by licensed firearm manufacturers but have a fraction of the regulations. In 2021, law enforcement in New York State recovered 637 PMFs (135 percent more than the year prior), reflecting continued annual increases from 44 in 2018 (the first year of reporting), 100 in 2019 (up 117 percent over the year prior), and 2020 (an increase of 171 percent). Other law enforcement agencies across the country, particularly those located in larger cities, have reported similar jumps in recoveries: Law enforcement in Boston has seen a nearly three-fold increase in the city since 2019; Philadelphia reported a five-fold increase since that year. Data from the ATF mirrors these trends: the recorded number of suspected PMF recoveries nationally increased more than 90 percent between 2020 and 2021 and more than ten-fold between 2016 and 2021. Such increases, however, must be interpreted with caution as they may be an artifact of increased reporting by jurisdictions.

While these increases represent a relatively low percentage of total gun recoveries, they illustrate that ghost guns pose a unique and rapidly growing challenge. Law enforcement agencies are unable to trace the origins of ghost guns used in crime and ultimately curb their flow at the source. While the federal government has taken first steps to regulate these weapons, state and local lawmakers have for several years been exploring and enacting policies designed to monitor and prevent ghost guns from falling into the hands of individuals who are prohibited from purchasing or possessing firearms.