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Construct and Predictive Validity of Composite Measures of Motivation to Change Derived from the URICA.

Poster presented at the College on Problems of Drug Dependence (CPDD) annual meeting, San Juan, Puerto Rico, June 14-19, 2008.

Craig A. Field, MPH, PhD (University of Texas School of Public Health, TX Node), Bryon H. Adinoff, MD (University of Texas Southwestern Medical Center/Veterans Affairs Medical Center, TX Node), T. Robert Harris, PhD (University of Texas School of Public Health, TX Node), Samuel A. Ball, PhD (Connecticut Veterans Affairs Healthcare Center, NE Node), Kathleen M. Carroll, PhD (Yale University School of Medicine, NE Node).

Motivation to change is considered an important component of treatment readiness and response among patients with addictive disorders. A better understanding of how to best measure motivation to change and how motivation relates to successful behavior change among both drug and alcohol abusers would broaden our understanding of the role of motivation in treatment of addictions. In this study, two multi-site, randomized clinical trials comparing brief motivational interventions with standard care were conducted in the National Drug Abuse Treatment Clinical Trials Network (protocols CTN-0004 and -0005). The construct and predictive validity of two composite measures of motivation to change derived from the University of Rhode Island Change Assessment (URICA): Readiness to Change (RTC) and Committed Action (CA) were evaluated. The a priori factor structure of the URICA was confirmed among patients with primary drug and primary alcohol use. Additionally, the RTC was significantly associated with fewer days of drug use among patients with primary drug use and lower treatment retention among patients with primary alcohol use. CA was not significantly associated with treatment outcomes. Neither RTC nor CA were found to moderate or mediate treatment outcomes at baseline or 4 weeks. In conclusion, increased motivation to change, as measured by the composite scores of motivation derived from the URICA, does not appear to influence treatment outcome. (Poster, PDF, English, 2009)

Keywords: Assessment | Behavior therapy | CTN platform/ancillary study | Motivational Enhancement Therapy (MET) | Motivational interviewing (MI) | Psychometrics | University of Rhode Island Change Assessment (URICA) | College on Problems of Drug Dependence (CPDD) annual meeting, 2008

Document No: 350

Submitted by Shinny Abraham, MHA, Texas Node Coordinator, 4/6/2009.

AUTHORS SEARCH LINK
Adinoff, Bryon H. search mail
Ball, Samuel A. search mail
Carroll, Kathleen M. search mail
Field, Craig A. search mail
Harris, T. Robert search
PROTOCOLS
NIDA-CTN-0004 search www
NIDA-CTN-0005 search www

Supported by a grant from the National Institute on Drug Abuse to the University of Washington Alcohol and Drug Abuse Institute.
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