What question did this study set out to answer?

This research aims to determine the risk of homicide among first-time handgun purchasers and their cohabitants during the waiting period post-purchase.

May 28, 2026JAMA Internal Medicine1 citations

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Homicide Risk During 10-Day Waiting Period Among First-Time Handgun Purchasers in California

SSSonja A. SwansonUniversity of Pittsburgh YZYifan ZhangStanford University ITIan TroidlUniversity of Pittsburgh

Key Points

This research aims to determine the risk of homicide among first-time handgun purchasers and their cohabitants during the waiting period post-purchase.
Cohort study design focusing on first-time handgun purchasers in California.
Assessment of homicide incidents within the mandatory waiting period of 10 days.
Analysis of outcomes related to gun purchasers and their cohabitants.
Increased homicide risk noted among gun purchasers during the 10-day waiting period.
Heightened danger for cohabitants of these purchasers was observed.
Findings underscore the urgent need for policies addressing waiting periods to enhance safety.

Abstract

This cohort study assesses the occurrence and risk of death by homicide involving gun purchasers and their cohabitants during a mandatory period between the purchase and physical possession of the gun.

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Cite This Study

Swanson et al. (Tue,) studied this question.

synapsesocial.com/papers/6a17da9b3fad632b0f9d78ab https://doi.org/https://doi.org/10.1001/jamainternmed.2026.1037

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