Evidence map›Paper›PMID 30924089›Full record

ArticleJournal of general internal medicine2019

The Impact of State Firearm Laws on Homicide and Suicide Deaths in the USA, 1991-2016: a Panel Study.

Michael Siegel, Molly Pahn, Ziming Xuan, Eric Fleegler, David Hemenway

Abstract read
In one paragraph

Article in Journal of general internal medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. State gun policies affect veteran and civilian suicide rates differently.The journal of trauma and acute care surgery · 2026
    Article
  6. Firearm Safety in a Country of Arms.The Milbank quarterly · 2026
    Article
  7. Article
  8. Article
  9. Frequency and Predictors of Adolescent Worry for School Gun Violence in the United States: Findings From a Nationally Representative Study.The Journal of adolescent health : official publication of the Society for Adolescent Medicine · 2026
    Article
  10. Examining the Impact of Permitless Firearm Legislation and COVID-19 on Crime and Arrests in Three Urban Cities.Journal of urban health : bulletin of the New York Academy of Medicine · 2025
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. State-Level Firearm Laws and Firearm Homicide in US Cities: Heterogenous Associations by City Characteristics.Journal of urban health : bulletin of the New York Academy of Medicine · 2024
    Article
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  18. Observational
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Michael SiegelDepartment of Community Health Sciences, Boston University School of Public Health, 801 Massachusetts Avenue, 4th Floor, Boston, MA, 02118, USA. mbsiegel@bu.edu.
Molly PahnDepartment of Community Health Sciences, Boston University School of Public Health, 801 Massachusetts Avenue, 4th Floor, Boston, MA, 02118, USA.
Ziming XuanDepartment of Community Health Sciences, Boston University School of Public Health, 801 Massachusetts Avenue, 4th Floor, Boston, MA, 02118, USA.
Eric FleeglerDivision of Emergency Medicine, Boston Children's Hospital, Boston, MA, USA.
David HemenwayHarvard T.H. Chan School of Public Health, Boston, MA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFirearm injuries are a major cause of mortality in the USA. Few recent studies have simultaneously examined the impact of multiple state gun laws to determine their independent association with homicide and suicide rates.

objectiveTo examine the relationship between state firearm laws and overall homicide and suicide rates at the state level across all 50 states over a 26-year period.

designUsing a panel design, we analyzed the relationship between 10 state firearm laws and total, age-adjusted homicide and suicide rates from 1991 to 2016 in a difference-in-differences, fixed effects, multivariable regression model. There were 1222 observations for homicide analyses and 1300 observations for suicide analyses.

participantsPopulations of all US states. MAIN MEASURES: The outcome measures were the annual age-adjusted rates of homicide and suicide in each state during the period 1991-2016. We controlled for a wide range of state-level factors. KEY

resultsUniversal background checks were associated with a 14.9% (95% CI, 5.2-23.6%) reduction in overall homicide rates, violent misdemeanor laws were associated with a 18.1% (95% CI, 8.1-27.1%) reduction in homicide, and "shall issue" laws were associated with a 9.0% (95% CI, 1.1-17.4%) increase in homicide. These laws were significantly associated only with firearm-related homicide rates, not non-firearm-related homicide rates. None of the other laws examined were consistently related to overall homicide or suicide rates.

conclusionsWe found a relationship between the enactment of two types of state firearm laws and reductions in homicide over time. However, further research is necessary to determine whether these associations are causal ones.

Indexed as

CausalityCross-Sectional StudiesFemaleFirearmsHomicideHumansMaleRegistriesSuicideUnited StatesWounds, Gunshotcommunity healthfirearmshealth policyinjurypreventionpublic health

Identifiers

PMID30924089
PMCPMC6816623

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.