# A comparison of firearm-related intimate partner homicide in Texas and Maryland: Prevalence, identification of those at risk, and the effect of firearm regulations

> **NIH NIH R61** · JOHNS HOPKINS UNIVERSITY · 2020 · $1,056,501

## Abstract

Intimate partner homicide (IPH) accounts for one-fifth of U.S. homicides, with the majority of IPH and
nearly all (91.6%) of intimate-partner related homicide-suicides (IPH-S) committed by firearms. While
much is known about the frequency by which IPH is committed by firearms, research is far more limited
regarding how victim/perpetrator firearm access, ownership, and behaviors affect IPH and IPH-S risk.
We propose a case-control study in two states (Maryland and Texas) chosen to provide robust interstate
firearm comparisons, as well as demographic, geographic and relevant law diversity. We will collect case
file (medical examiner, police, prosecutor) and interview data to compare the histories of IPH victims
(cases) to those of a random sample of individuals who experienced non-fatal physical IPV in the past
two years (controls). The study will accomplish the following: (1) Obtain a count of firearm-related IPH
and IPH-S across multiple subgroups through triangulation of data from multiple sources; (2) Describe
the context of IPH and IPH-S, including precipitating events, relationship history, and perpetrator
characteristics such as prior suicidality and prior substance abuse; (3) Assess the strength of firearm
access, ownership, and/or use as risk factors for IPH and IPH-S, attending to intersections with risk
factors at the family (e.g., abuse history), community (e.g., community violence), social and
environmental levels (e.g., state firearm policies, accessibility of social services); (4) Identify differential
patterns of risk between firearm-related and non-firearm related IPH, and between firearm-related IPH
and IPH-S; (5) Examine patterns of gun ownership behaviors and attitudes in relation to IPH and IPH-S.
We will create a database that will combine data across current data collection endeavors, creating a
foundation for future funding. Findings will inform future evidence-based, multiple-level prevention
interventions and allow policy makers and practitioners to develop and refine risk-informed approaches
to reduce and prevent lethal IPV outcomes.

## Key facts

- **NIH application ID:** 10166359
- **Project number:** 1R61HD104570-01
- **Recipient organization:** JOHNS HOPKINS UNIVERSITY
- **Principal Investigator:** Jacquelyn Cutler Campbell
- **Activity code:** R61 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2020
- **Award amount:** $1,056,501
- **Award type:** 1
- **Project period:** 2020-09-21 → 2024-08-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10166359

## Citation

> US National Institutes of Health, RePORTER application 10166359, A comparison of firearm-related intimate partner homicide in Texas and Maryland: Prevalence, identification of those at risk, and the effect of firearm regulations (1R61HD104570-01). Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/grant/nih/10166359. Licensed CC0.

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