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Updated: Jun 17, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
Where do we go from here? Interim analysis to forge ahead in violence prevention
Rochelle A Dicker1, Sebastian Jaeger, Mary M Knudson
1Department of Surgery, University of California-San Francisco and Division of Acute Care Surgery, San Francisco General Hospital, San Francisco, California, USA. dickerr@sfghsurg.ucsf.edu
The Wraparound Project (WP) successfully reduced violence recidivism using culturally competent case management (CM). This hospital-based program demonstrated feasibility and early efficacy in connecting high-risk individuals with needed resources.
Area of Science:
- Public Health
- Trauma Surgery
- Social Work
Background:
- Interpersonal violent injury disproportionately affects African Americans and Latinos.
- Injury recidivism rates range from 35% to 50%, highlighting a critical need for intervention.
- Hospital-based, culturally competent case management (CM) programs can leverage the "teachable moment" post-injury to reduce risk.
Purpose of the Study:
- To perform a detailed intermediate evaluation of the Wraparound Project (WP), a hospital-based, case-managed violence prevention program.
- To assess the feasibility and early programmatic efficacy of the WP.
- To identify areas for improvement to strengthen the program and enhance its effectiveness in reducing injury recidivism.
Main Methods:
- An 18-month-old program was evaluated using a Centers for Disease Control and Prevention-recommended instrument for injury prevention.
- Process evaluation was used to test the feasibility of the WP.
- Impact evaluation was employed to assess intermediate goals of risk reduction and early efficacy.
Main Results:
- The WP successfully screened 73% of gunshot victims and 57% of stab wound victims.
- Fifty-four percent of screened individuals had identified needs and received CM services, with a low refusal rate of 13%.
- For high-risk clients receiving full services (N=45), 60% were African American and 30% were Latino; 60% of African American clients lacked paternal contact. Case managers spent significant time (>6 hours/week) with clients, addressing multiple needs, and the overall attrition rate was only 4%.
Conclusions:
- Wraparound Project case managers built trust and developed risk reduction plans for high-risk clients, with cultural competency being a vital component.
- The program successfully addressed at least 50% of six out of seven major identified needs.
- The program's demonstrated value and positive results have secured municipal funding for an additional case manager, reinforcing the framework for reducing recidivism through culturally competent CM and risk factor modification.
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