NCT02318732

Brief Summary

This study evaluates exposure to California's Armed and Prohibited Persons System (APPS) and risk of future violence and other important outcome events among individuals who legally purchased firearms in the past but have since become prohibited from owning them. The main hypothesis is that APPS will be associated with a significant reduction in risk for future violence among individuals who are directly affected.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
20,000

participants targeted

Target at P75+ for not_applicable

Timeline
1mo left

Started Feb 2015

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 12, 2014

Completed
5 days until next milestone

First Posted

Study publicly available on registry

December 17, 2014

Completed
2 months until next milestone

Study Start

First participant enrolled

February 1, 2015

Completed
11.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 21, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 21, 2026

Last Updated

February 18, 2026

Status Verified

February 1, 2026

Enrollment Period

11.4 years

First QC Date

December 12, 2014

Last Update Submit

February 13, 2026

Conditions

Violence

Keywords

violence

Outcome Measures

Primary Outcomes (1)

  • Incidence of arrest for violent and firearm-related crimes

    Arrests for violent and firearm-related crimes among persons eligible for the APPS intervention

    Up to 3 years

Secondary Outcomes (3)

  • Incidence of arrest for non-violent, non firearms-related crimes

    Up to 3 years

  • Incidence of emergency mental health hospitalizations

    Up to 3 years

  • Incidence of domestic violence restraining orders

    Up to 3 years

Other Outcomes (2)

  • Community level rates of violence

    Up to 3 years

  • Cost benefit analysis

    Up to 3 years

Study Arms (2)

Group 1

EXPERIMENTAL

APPS intervention will be implemented in Group 1 communities prior to implementation in Group 2 communities.

Behavioral: APPS intervention

Group 2

ACTIVE COMPARATOR

APPS intervention will be implemented in Group 2 communities following implementation in Group 1 communities.

Behavioral: APPS intervention

Interventions

APPS interventionBEHAVIORAL

Contact with and recovery of firearms from individuals who are prohibited from possessing them

Group 1Group 2

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adults with records of firearms ownership who have experienced a prohibiting event. Prohibiting events are based in Federal and California state law. Among others, they include criminal convictions for felonies and selected violent misdemeanors; emergency hospitalization for dangerousness associated with severe mental illness, as specified in statute; and status as respondent to a domestic violence restraining order.

You may not qualify if:

  • None.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

UC Davis

Sacramento, California, 95618, United States

Location

Related Publications (2)

  • Wintemute GJ, Beckett L, Kass PH, Tancredi D, Studdert D, Pierce G, Braga AA, Wright MA, Cerda M. Evaluation of California's Armed and Prohibited Persons System: study protocol for a cluster-randomised trial. Inj Prev. 2017 Oct;23(5):358. doi: 10.1136/injuryprev-2016-042194. Epub 2016 Oct 11.

    PMID: 27729440BACKGROUND

  • Wintemute GJ, Tancredi D, Pear VA, Li Y, McCort CD, Pierce G, Braga AA, Wright MA, Laqueur H, Kravitz-Wirtz N, Studdert D, Beckett L. Population-level effects on crime of recovering firearms from armed prohibited persons: intention-to-treat analysis of a pragmatic cluster-randomised trial in California cities. Inj Prev. 2024 Oct 2:ip-2024-045234. doi: 10.1136/ip-2024-045234. Online ahead of print.

    PMID: 39358039DERIVED

Study Officials

  • Garen J Wintemute, MD, MPH

    University of California, Davis

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 12, 2014

First Posted

December 17, 2014

Study Start

February 1, 2015

Primary Completion (Estimated)

June 21, 2026

Study Completion (Estimated)

June 21, 2026

Last Updated

February 18, 2026

Record last verified: 2026-02

Locations

US(1)