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Motivation Enhancement Therapy with Pregnant Substance-Abusing Women: Does Baseline Motivation Moderate Efficacy?

Drug and Alcohol Dependence 2009;101(1-2):74-79. [doi: 10.1016/j.drugalcdep.2008.11.004]

Steven J. Ondersma, PhD (Wayne State University), Theresa M. Winhusen, PhD (University of Cincinnati/CinARC, OV Node), Sarah J. Erickson, PhD (University of New Mexico, SW Node), Susan M. Stine, MD, PhD (Wayne State University), Yun Wang, MD (Wayne State University).

Some evidence suggests that motivational approaches are less efficacious -- or even counter-productive -- with persons who are relatively motivated at baseline. The present study was conducted to examine whether disordinal moderation by baseline motivation could partially explain negative findings in protocol CTN-0013 ("Motivational Enhancement Therapy to Improve Treatment Utilization and Outcome in Pregnant Substance Users"). Analyses also focused on the relative utility of the University of Rhode Island Change Assessment (URICA) scale, vs. a single goal question as potential moderators of Motivation Enhancement Therapy (MET). Participants were 200 pregnant women presenting for substance abuse treatment at one of four sites. Women were randomly assigned to either a three-session MET condition or treatment as usual (TAU). Generalized Estimating Equations (GEE) revealed no significant moderation effects on drug use at post-treatment. At follow-up, contrary to expectations, participants who had not set a clear quit goal at baseline were less likely to be drug-free if randomized to MET (OR = 0.48); participants who did set a clear quit goal were more likely to be drug-free if randomized to MET (OR = 2.53). No moderating effects were identified via the URICA. Disordinal moderation of MET efficacy by baseline motivation may have contributed somewhat to the negative results of the CTN-0013 study, but in the opposite direction expected. A simple question regarding intent to quit may be useful in identifying persons who may differentially respond to motivational interventions. However, moderation effects are unstable, may be best identified with alternate methodologies, and may operate differently among pregnant women. (Article (Peer-Reviewed), PDF, English, 2009)

Keywords: Behavior therapy | CTN platform/ancillary study | Gender-specific interventions | Motivational Enhancement Therapy (MET) | Motivational interviewing (MI) | Pregnant women | Retention - Treatment | University of Rhode Island Change Assessment (URICA) | Women | Drug and Alcohol Dependence (journal)

Document No: 334, PMID: 19101099, PMCID: PMC2792933

Submitted by CTN Dissemination Librarians (12/30/2008).

AUTHORS SEARCH LINK
Erickson, Sarah J. search mail
Ondersma, Steven J. search mail
Stine, Susan M. search
Wang, Yun search
Winhusen, Theresa M. search mail
PROTOCOLS
NIDA-CTN-0013 search www
PARTICIPATING NODES
Ohio Valley (Lead) search www
North Carolina search www
Southwest 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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