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Posts tagged firearm violence
Washington State Assault Weapon Firearm Violence Before and After Firearm Legislation Reform

By Avneet Bhullar, Jonathan Shipley, […], and Jeffry Nahmias, , et al,

Background

In January of 2019, Washington State (WA) passed Initiative 1639 making it illegal for persons <21 years-old to buy assault weapons (AWs). This study aimed to evaluate the effects of WA-1639 on firearm-related incidents involving AWs by those <21 years-old in WA, hypothesizing a decrease in incidents after WA-1639.

Methods

Retrospective (2016-2021) data on firearm violence (FV) events were gathered from the Gun Violence Archive. The rate of FV was weighted per 100,000 people. Total monthly incidents, injuries, and deaths were compared pre-law (January 2016-December 2018) vs post-law (January 2019-December 2021) implementation. Mann-Whitney U tests and Poisson’s regression were used for analysis.

Results

From 4091 FV incidents (2210 (54.02%) pre-law vs 1881 (45.98%) post-law), 50 involved AWs pre- (2.3%) and 15 (.8%) post-law. Of these, 11 were committed by subjects <21 years-old pre-law and only one occurred post-law. Total incidents of FV (z = −3.80, P < .001), AW incidents (z = −4.28, P < .001), and AW incidents involving someone <21 years-old (z = −3.01, P < .01) decreased post-law. Additionally, regression analysis demonstrated the incident rate ratio (IRR) of all FV (1.23, 95% CI [1.10-1.38], P < .001), all AW FV incidents (3.42, 95% CI [1.70-6.89], P = .001), and AW incidents by subjects <21 years-old (11.53, 95% CI [1.52-87.26], P = .02) were greater pre-law vs post-law.

Discussion

Following implementation of WA-1639, there was a significant decrease in FV incidents and those involving AWs by individuals <21 years-old. This suggests targeted firearm legislation may help curtail FV. Further studies evaluating FV after legislation implementation in other states is needed to confirm these findings.

The American SurgeonTM. 2024;0(0). doi:10.1177/00031348241244644 (Online First)

Structural racism and Long-term Disparities in Youth Exposure to Firearm Violence

By Jonathan Jay

Young people’s exposure to firearm violence in US cities has surged during the COVID-19 pandemic.1,2 This study by Lanfear and colleagues3 examines how long-term changes in firearm violence have influenced exposure across multiple birth cohorts in Chicago, Illinois. Comparing 4 cohorts from the Project on Human Development in Chicago Neighborhoods (PHDCN), Lanfear et al3 find that any benefits younger cohorts might have from declines in citywide violence from 1994 to 2014 were erased by subsequent violence increases. The results underscore how little progress we have made over several decades to address the root causes of community firearm violence and its disproportionate effects on Black and Hispanic youth.

In the study by Lanfear and colleagues,3 the youngest PHDCN cohort, born around 1996, entered adulthood after a sustained lull in firearm homicide rates in Chicago (ie, 2004-2014). This lull limited the cohort’s exposure to neighborhood experiences of firearm violence, such as seeing someone get shot, during early life. However, these youth were in the highest-risk phase of adolescence (ages 18-24 years) when firearm violence spiked in 2016 and again in 2020.3 Consequently, their cumulative risk of being shot was comparable to cohorts born earlier, including those who entered adolescence during the most violent years of the 1990s.3

Exposure to firearm violence is associated with lasting consequences for youth and their loved ones. Indirect exposure (eg, witnessing violence) and direct exposure (eg, surviving an assault) can influence mental and physical health outcomes over the life course. In a subset of individuals, exposure is associated with the future enactment of firearm violence, feeding cycles of firearm violence at the community level. The increase in firearm violence during the COVID-19 pandemic is likely to have long-term outcomes because it substantially increased both indirect1 and direct2 exposure among US youth. Therefore, it is crucial to continue scaling up public health programs to halt the violence surge and deal with its aftermath, especially through community-based outreach programs and trauma-informed services.

At the same time, efforts must directly target the systemic inequities that concentrate firearm violence exposure among Black and Hispanic youth. Racial and ethnic disparities in these outcomes are profound and longstanding. In the study by Lanfear et al,3 differences in firearm violence exposure by race were more extreme than differences between birth cohorts. By the end of the study period, exposure was roughly comparable across age cohorts but exposure was consistently lowest among White youth. Other recent work, such as a 2023 study by Jay et al,2 reported that during the pandemic, Black children were 100 times, and Hispanic children 25 times, more likely than White children to be shot in Chicago and other major US cities.

These staggering disparities demand action against structural racism as a driver of firearm violence. Incremental violence reductions, such as those experienced by many US cities from the mid-1990s through mid-2010s, are necessary and life-saving but also precarious, as recent spikes have shown. There is no consensus among scholars on the reasons for the long-term declines in violence, but it is evident that these declines did not fundamentally disrupt the racial inequities that determine who is at the most risk of being shot or witnessing a shooting: even as homicide rates declined in Chicago, violence was increasingly concentrated in predominantly Black neighborhoods.4

Although community violence had been gradually declining, Black and Hispanic youth remained pervasively exposed to societal inequities. Child poverty in the US peaked in the early 2010s, with more than one-quarter of Black and Hispanic children living below the federal poverty line.5 Meanwhile, policy makers emphasized punitive responses, such as aggressive policing and harsh sentencing, even for nonviolent offenses. Black and Hispanic communities bore the brunt of these policies. In Chicago, for example, mass incarceration “hot spots” emerged, mainly in Black neighborhoods on the South and West sides. There were 851 “million dollar blocks,” where the costs of incarcerating residents from these areas exceeded $1 million, from 2005 to 2009 alone.6 Such massive investments in punishment necessarily came at the expense of community investments that might have helped close racial and ethnic gaps in child opportunity.

This disinvestment from basic needs likely explains why Black and Hispanic youth experienced the largest change in violence exposure during the COVID-19 pandemic. When violence increased during the pandemic, it increased fastest in the neighborhoods most burdened by racial segregation and economic deprivation,7 where COVID-19 deaths, economic losses, and other stressors were most severe. Firearm violence exposure among White youth mostly remained low during the pandemic, suggesting that the 2020 spike was not inevitable, but rather a byproduct of the social and economic vulnerability produced by sociopolitical forces, such as long-term disinvestment.

Addressing racial and ethnic disparities in youth exposure to firearm violence requires not only interrupting cycles of violence, but interrupting cycles of racialized disinvestment and punitive policy-making. Community investments at the micro level, such as improving the physical condition of abandoned properties, have been shown to reduce nearby firearm violence8; at the macro level, the federal Child Tax Credit caused child poverty to plummet in 2021.5 Policies to reduce residential racial segregation, such as inclusionary zoning, are also likely necessary to close gaps in the long term. There was not much change in firearm violence exposure for youth born between the early 1980s and late 1990s in Chicago—and until we remove the structural barriers to community safety, this change is unlikely to come.

JAMA Network Open, 2023;6(5):e2312425. doi:10.1001/jamanetworkopen.2023.12425

Analysis of Daily Ambient Temperature and Firearm Violence in 100 US Cities

By: Vivian H. Lyons, Emma L. Gause, Keith R Spangler, et al.

Importance: Firearm violence is a leading public health crisis in the US. Understanding whether and how ambient temperature is associated with firearm violence may identify new avenues for prevention and intervention.

Objective: To estimate the overall and regional association between hotter temperatures and higher risk of firearm violence in the US.

Design, setting, and participants: This cross-sectional study used distributed lag nonlinear models, controlling for seasonality and long-term time trends by city and pooled results overall and by climate region. The most populous cities in the US with the highest number of assault-related firearm incidence (ie, shootings) from 2015 to 2020 were analyzed. Data analysis was performed from October 2021 to June 2022.

Exposures: Maximum daily temperature by city.

Main outcomes and measures: The primary outcome was the number of assault-related firearm shootings by city.

Results: A total of 116 511 shootings in 100 cities were included in this analysis. The pooled analysis estimated that 6.85% (95% CI, 6.09%-7.46%) of all shootings were attributable to days hotter than city-specific median temperatures. This equates to 7973 total shootings (95% CI, 7092-8688 total shootings) across the 100 cities over the 6-year study period, although the number of total persons injured or killed would be higher. Estimated risk of firearm incidents increased almost monotonically with higher temperatures, with a local peak at the 84th percentile of the temperature range corresponding to a relative risk of 1.17 (95% CI, 1.12-1.21) compared with the median temperature. However, even moderately hot temperatures were associated with higher risk of shootings. Although significant, there was low heterogeneity between cities (I2 = 11.7%; Cochran Q test, P = .02), indicating regional or climate-specific variation in the daily temperature and incident shootings relationship.

Conclusions and relevance: These findings underscore the importance of heat adaptation strategies broadly throughout the year to reduce shootings, rather than focusing on only the hottest days.

JAMA Netw Open. 2022 Dec 1;5(12):e2247207. doi: 10.1001/jamanetworkopen.2022.47207. PMID: 36525273; PMCID: PMC9856408.

Evaluation of Gunshot Detection Technology to Aid in the Reduction of Firearms Violence

By Daniel S. Lawrence, Nancy G. La Vigne, Paige S. Thompson

This publication represents a technical summary report of the Urban Institute’s evaluation of the implementation, use, and impact of Gunshot Detection Technology (GDT) by law enforcement agencies in three cities: Denver, CO; Milwaukee, WI; and Richmond, CA. The goal of this study was to conduct a rigorous process and impact evaluation of GDT to inform policing researchers and practitioners about the impact GDT may have. To achieve this goal, we implemented a mixed-methods research design. Qualitative data collection included 46 interviews with criminal justice stakeholders to learn implementation processes and challenges associated with iDT, and 6 focus groups with 49 community members to learn how residents feel about policing efforts to reduce firearm violence and its use of GDT. Quantitative data collection included administrative data on calls for service (CFS), crime, and GDT alerts, as well as comprehensive case file reviews of 174 crimes involving a firearm. Quantitative analyses examined the impact of GDT by (1) comparing counts of gunshot notifications for GDT alerts to shooting-related CFS, (2) comparing response times of GDT alerts to shooting-related CFS, (3) examining the impact GDT has had on CFS and crimes, and (4) conducting a cost-benefit analysis of the GDT. Evaluation findings suggest that GDT is generally but not consistently associated with faster response times and more evidence collection, with impact on crime more uneven but generally cost-beneficial. We also conclude that agencies should implement GDT sensors strategically, train officers thoroughly, ensure that GDT data are used and integrated with other systems, and engage with community members early and often. More detailed information from this study will be available in forthcoming journal articles.

Washington, DC: Urban Institute 2019. 15p.

Gunshot Detection Technology Time Savings and Spatial Precision: An Exploratory Analysis in Kansas City

By Eric L. Piza, David N. Hatten, Jeremy G. Carter, Jonas H. Baughman, George O. Mohler

Gunshot Detection Technology (GDT) is expected to impact gun violence by accelerating the discovery and response to gunfire. GDT should further collect more accurate spatial data, as gunfire is assigned to coordinates measured by acoustic sensors rather than addresses reported via 9-1-1 calls for service (CFS). The current study explores the level to which GDT achieves these benefits over its first five years of operation in Kansas City, Missouri. Data systems are triangulated to determine the time and location gunfire was reported by GDT and CFS. The temporal and spatial distances between GDT and CFS are then calculated. Findings indicate GDT generates time savings and increases spatial precision as compared to CFS. This may facilitate police responses to gunfire events and provide more spatially accurate data to inform policing strategies. Results of generalized linear and multinomial logistic regression models indicate that GDT benefits are influenced by a number of situational factors.

Policing: A Journal of Policy and Practice. https://doi.org/10.1093/police/paac097 , 2023 38p.

Factors associated with police shooting mortality: A focus on race and a plea for more comprehensive data

By Justin Nix and John A. Shjarback

Objectives

To quantify nonfatal injurious police shootings of people and examine the factors associated with victim mortality.

Methods

We gathered victim-level data on fatal and nonfatal injurious police shootings from four states that have such information publicly available: Florida (2009–14), Colorado (2010–19), Texas (2015–19), and California (2016–19). For each state, we examined bivariate associations between mortality and race/ethnicity, gender, age, weapon, and access to trauma care. We also estimated logistic regression models predicting victim mortality in each state.

Results

Forty-five percent of these police shooting victims (N = 1,322) did not die. Black–white disparities were more pronounced in nonfatal injurious police shootings than in fatal police shootings. Overall, Black victims were less likely than white victims to die from their wound(s). Younger victims were less likely to die from their wound(s), as well as those who were unarmed.

Conclusions

Racial and age disparities in police shootings are likely more pronounced than previous estimates suggest.

Policy implications

Other states should strongly consider compiling data like that which is currently being gathered in California. Absent data on nonfatal injurious police shootings–which account for a large share of deadly force incidents–researchers and analysts must be cautious about comparing and/or ranking jurisdictions in terms of their police-involved fatality rates.

PLOS One,  November 10, 2021

Inequalities in Exposure to Firearm Violence by Race, Sex, and Birth Cohort From Childhood to Age 20 years, 1995-2021

By Charles C Lanfear , Rebecca Bucci , David S Kirk , Robert J Sampson

Importance: The past quarter-century has seen both sharp declines and increases in firearm violence in the United States. Yet, little is known about the age of first exposure to firearm violence and how it may differ by race, sex, and cohort.

Objective: To examine race, sex, and cohort differences in exposure to firearm violence in a representative longitudinal study of children who grew up in periods with varying rates of firearm violence in the United States and to examine spatial proximity to firearm violence in adulthood.

Design, setting, and participants: This population-based representative cohort study included multiple cohorts of children followed-up from 1995 through 2021 in the Project on Human Development in Chicago Neighborhoods (PHDCN). Participants included Black, Hispanic, and White respondents from 4 age cohorts of Chicago, Illinois, residents, with modal birth years of 1981, 1984, 1987, and 1996. Data analyses were conducted from May 2022 to March 2023.

Main outcomes and measures: Firearm violence exposure, including age when first shot, age when first saw someone shot, and past-year frequency of fatal and nonfatal shootings within 250 m of residence.

Results: There were 2418 participants in wave 1 (in the mid-1990s), and they were evenly split by sex, with 1209 males (50.00%) and 1209 females (50.00%). There were 890 Black respondents, 1146 Hispanic respondents, and 382 White respondents. Male respondents were much more likely than female respondents to have been shot (adjusted hazard ratio [aHR], 4.23; 95% CI, 2.28-7.84), but only moderately more likely to have seen someone shot (aHR, 1.48; 95% CI, 1.27-1.72). Compared with White individuals, Black individuals experienced higher rates of all 3 forms of exposure (been shot: aHR, 3.05; 95% CI, 1.22-7.60; seen someone shot: aHR, 4.69; 95% CI, 3.41-6.46; nearby shootings: adjusted incidence rate ratio [aIRR], 12.40; 95% CI, 6.88-22.35), and Hispanic respondents experienced higher rates of 2 forms of violence exposure (seen someone shot: aHR, 2.59; 95% CI, 1.85-3.62; nearby shootings: aIRR, 3.77; 95% CI, 2.08-6.84). Respondents born in the mid-1990s who grew up amidst large declines in homicide but reached adulthood during city and national spikes in firearm violence in 2016 were less likely to have seen someone shot than those born in the early 1980s who grew up during the peak of homicide in the early 1990s (aHR, 0.49; 95% CI, 0.35-0.69). However, the likelihood of having been shot did not significantly differ between these cohorts (aHR, 0.81; 95% CI, 0.40-1.63).

Conclusions and relevance: In this longitudinal multicohort study of exposure to firearm violence, there were stark differences by race and sex, yet the extent of exposure to violence was not simply the product of these characteristics. These findings on cohort differences suggest changing societal conditions were key factors associated with whether and at what life stage individuals from all race and sex groups were exposed to firearm violence.

JAMA Network Open 6(5); 2023