Treating Violence-Prone Substance Use Disorder Patients

NCT ID: NCT00700973

Last Updated: 2015-04-27

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE2/PHASE3
• Total Enrollment: 141 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2009-02-28
• Study Completion Date: 2013-11-30

Brief Summary

This project is intended to help substance use disorder patients who perpetrate interpersonal violence against other adults.

Detailed Description

Background:

Interpersonal violence (IPV) among substance use disorder (SUD) patients is common, undertreated, and costly. SUD patients have high rates of perpetrating IPV, and IPV is a risk factor for poor response to SUD treatment. Failure to address IPV among SUD patients interferes with treatment effectiveness and contributes to relapse and higher rates of health services use. Nonetheless, SUD treatment programs typically do not include violence prevention interventions and few studies have examined interventions designed to prevent violence perpetration among SUD patients.

Objectives:

This trial evaluated the effectiveness of an IPV-prevention (IPV-P) intervention among patients entering VA SUD treatment who had perpetrated violence in the past year against another adult. Primary objectives were to test the hypotheses that, compared to patients assigned to a control condition (CC), those assigned to IPV-P would (1) improve more on violence and SUD outcomes, and (2) use fewer VA mental health and medical care services, thereby saving costs for VA. Secondary objectives were to test the hypothesis that, compared to patients assigned to CC, those assigned to IPV-P would improve more on legal and alienation problems and social resources.

Methods:

Patients entering VA SUD treatment who met eligibility criteria (past-year violence; cognitively intact) and provided informed consent were assigned to SUD usual care plus either a CC (N=60) or IPV-P (N=59) intervention using a recurrent institutional design. That is, the IPV-P and CC conditions were run in alternate 3-month periods. The manualized IPV-P group intervention, based on a Cognitive-Behavioral approach, consisted of 8 in-person group sessions over 1 month, followed by telephone calls once a month for 3 months. The manualized CC was designed to control for non-specific treatment effects associated with the IPV-P condition, i.e., counselor time and attention, peer support, patients' expectations that additional sessions provide benefit. It consisted of 8 in-person group sessions over 1 month that reviewed material covered in usual SUD treatment, but with novel methods used to deliver the IPV-P intervention (role-play, homework, group activities). CC included the booster telephone sessions (once per month for 3 months). Participants were assessed at baseline and end-of-intervention (4 months post-baseline) and 6 and 12 months post-intervention (i.e., 10 and 16 months post-baseline) for primary and secondary outcomes and non-VA healthcare. Assessments consisted of the Addiction Severity Index (ASI, to assess Alcohol, Drugs, Psychiatric, and Legal functioning), the Conflicts Tactics Scale (CTS, to assess Psychological Aggression and Physical Assault against another adult), the Multidimensional Personality Questionnaire (MDQ, to assess Alienation, Stress Reaction, and Aggression), and the Life Stressors and Social Resources Inventory (LISRES, to assess family and friends resources). VA health care is being assessed with VA databases. Response rates at 4, 10, and 16 months were 90%, 79%, and 73%, respectively, and did not differ between the IPV-P and CC groups. Follow-up analyses compared the IPV-P to the CC group on outcomes using analyses of covariance that controlled for the baseline value of the outcome.

Status:

We are still completing portions of this project: (1) conducting mixed effects regression analyses to compare the CC and IPV-P groups on primary and secondary outcomes (these analyses are partially completed), and (2) using data on VA health care utilization to compare the two groups on VA health care costs (permission to download these data has been obtained, and we are working with HERC investigators to download and analyze the data).

Conditions

Substance-related Disorders; Violence

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: HEALTH_SERVICES_RESEARCH
• Blinding Strategy: NONE

Study Groups

Arm 1

Substance use disorder usual care

Group Type: ACTIVE_COMPARATOR

Usual care

Intervention Type: OTHER

Substance use disorder usual care

Arm 2

Interpersonal violence prevention intervention

Group Type: EXPERIMENTAL

Interpersonal Violence Prevention Intervention

Intervention Type: BEHAVIORAL

This is a cognitive-behavioral approach incorporating cognitive restructuring and behavioral change.

Interventions

Interpersonal Violence Prevention Intervention

This is a cognitive-behavioral approach incorporating cognitive restructuring and behavioral change.

Intervention Type: BEHAVIORAL

Usual care

Substance use disorder usual care

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Entering VA substance use disorder treatment
• past-year violence
• cognitively intact

Exclusion Criteria

• Not entering VA substance use disorder treatment
• no past-year violence
• cognitively not intact

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

US Department of Veterans Affairs

FED

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Christine Timko, PhD

Role: PRINCIPAL_INVESTIGATOR

VA Palo Alto Health Care System, Palo Alto, CA

Locations

VA Palo Alto Health Care System, Palo Alto, CA

Palo Alto, California, United States

Countries

United States

References

Timko C, Desai A, Blonigen DM, Moos BS, Moos RH. Driving while intoxicated among individuals initially untreated for alcohol use disorders: one- and sixteen-year follow-ups. J Stud Alcohol Drugs. 2011 Mar;72(2):173-84. doi: 10.15288/jsad.2011.72.173.

Reference Type: RESULT

PMID: 21388590 (View on PubMed)

Blonigen DM, Timko C, Moos BS, Moos RH. Impulsivity is an independent predictor of 15-year mortality risk among individuals seeking help for alcohol-related problems. Alcohol Clin Exp Res. 2011 Nov;35(11):2082-92. doi: 10.1111/j.1530-0277.2011.01560.x. Epub 2011 Jun 1.

Reference Type: RESULT

PMID: 21631544 (View on PubMed)

Makin-Byrd K, Cronkite RC, Timko C. The influence of abuse victimization on attendance and involvement in mutual-help groups among dually diagnosed male veterans. J Subst Abuse Treat. 2011 Jul;41(1):78-87. doi: 10.1016/j.jsat.2011.02.001. Epub 2011 Mar 10.

Reference Type: RESULT

PMID: 21396794 (View on PubMed)

Timko C, Sutkowi A, Cronkite RC, Makin-Byrd K, Moos RH. Intensive referral to 12-step dual-focused mutual-help groups. Drug Alcohol Depend. 2011 Nov 1;118(2-3):194-201. doi: 10.1016/j.drugalcdep.2011.03.019. Epub 2011 Apr 22.

Reference Type: RESULT

PMID: 21515004 (View on PubMed)

Other Identifiers

IIR 07-264

Identifier Type: -

Identifier Source: org_study_id