州级枪支立法与女性亲密伴侣杀人的关联。

Association of State Firearm Legislation With Female Intimate Partner Homicide.

机构信息

Department of Epidemiology, University of North Carolina, Chapel Hill, North Carolina; Injury Prevention Research Center, University of North Carolina, Chapel Hill, North Carolina.

出版信息

Am J Prev Med. 2019 Jan;56(1):125-133. doi: 10.1016/j.amepre.2018.09.007.

DOI:10.1016/j.amepre.2018.09.007

PMID:30573141

Abstract

INTRODUCTION

The aim of this study was to assess the association between state firearm legislation and female intimate partner homicide.

METHODS

In 2017, the authors conducted a secondary data analysis of 16 states from 2010 to 2014, using data from the National Violent Death Reporting System, the State Firearm Law Database, and additional public sources. Poisson regression analyses quantified the association between the number of state restrictive firearm legislative provisions and the female population-based intimate partner homicide rate. For etiologic reasons, intimate partner homicide was disaggregated into homicide-suicide (intimate partner homicide followed by perpetrator suicide) and homicide-only intimate partner homicide (intimate partner homicide in the absence of perpetrator suicide).

RESULTS

There were 1,693 female intimate partner homicide deaths in the 16 states during 2010-2014; 67% were homicide-only intimate partner homicide. The number of state-level legislative provisions related to firearm restrictions ranged from four (Alaska) to 95 (Massachusetts). The intimate partner homicide rate in states with zero to 39 provisions was 1.16 per 100,000 person years (95% CI=1.10, 1.22) and in states with >40 provisions was 0.68 per 100,000 person years (95% CI=0.61, 0.72). The incidence of female intimate partner homicide was 56% lower in states with ≥40 legislative provisions (adjusted incidence rate ratio=0.44, 95% CI=0.28, 0.68), relative to states with zero to 39 provisions. This protective association was stronger for homicide-only intimate partner homicide than homicide-suicide intimate partner homicide.

CONCLUSIONS

More state-level restrictive firearm legislation is associated with a lower rate of female intimate partner homicides.

摘要

引言

本研究旨在评估州级枪支立法与女性亲密伴侣凶杀案之间的关联。

方法

2017 年，作者对 2010 年至 2014 年的 16 个州进行了二次数据分析，使用了国家暴力死亡报告系统、州级枪支法律数据库和其他公共来源的数据。泊松回归分析量化了州级限制性枪支立法规定数量与女性人群为基础的亲密伴侣凶杀率之间的关联。出于病因学原因，亲密伴侣凶杀案被细分为凶杀-自杀（亲密伴侣凶杀案后发生凶手自杀）和仅凶杀亲密伴侣凶杀案（凶手自杀）。

结果

在 2010 年至 2014 年期间，16 个州共有 1693 名女性亲密伴侣凶杀案死亡；其中 67%是仅凶杀亲密伴侣凶杀案。与枪支限制相关的州级立法规定数量从 4 项（阿拉斯加）到 95 项（马萨诸塞州）不等。规定数量在 0 至 39 项的州的亲密伴侣凶杀案发生率为每 10 万人 1.16 人年（95%CI=1.10，1.22），规定数量超过 40 项的州为每 10 万人 0.68 人年（95%CI=0.61，0.72）。在规定数量超过 40 项的州，女性亲密伴侣凶杀案的发生率降低了 56%（调整后的发病率比=0.44，95%CI=0.28，0.68），与规定数量在 0 至 39 项的州相比。这种保护关联在仅凶杀亲密伴侣凶杀案中比凶杀-自杀亲密伴侣凶杀案更强。