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Related Experiment Videos

Factor structure and predictive validity of the Obsessive Compulsive Drinking Scale.

J S Roberts1, R F Anton, P K Latham

  • 1Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Alcohol Research Center, Charleston 29425, USA. roberjam@musc.edu

Alcoholism, Clinical and Experimental Research
|October 8, 1999
PubMed
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The Obsessive Compulsive Drinking Scale (OCDS) effectively measures alcohol use obsessions and compulsions. Its three subscales are reliable, distinct, and predict drinking behaviors in alcoholism treatment.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Addiction Medicine

Background:

  • The Obsessive Compulsive Drinking Scale (OCDS) is a 14-item self-report measure for alcohol-related obsessions and compulsive drinking behaviors.
  • Assessing the OCDS's factor structure and the utility of its subscales is crucial for understanding and treating alcohol dependence.

Purpose of the Study:

  • To determine the underlying factor structure of the Obsessive Compulsive Drinking Scale (OCDS).
  • To evaluate if OCDS subscale scores are distinctive, internally consistent, and predictive of future drinking.
  • To assess the OCDS's ability to differentiate between naltrexone and placebo treatment groups in alcoholism.

Main Methods:

  • A factor analysis (iterated principal axis with oblique promax rotation) was performed on OCDS data from 132 alcohol-dependent subjects.

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  • Subscale scores were created by summing items loading onto each of the identified primary factors.
  • Data were collected across up to 15 assessment points, with interitem correlations pooled.

    • Main Results:

    • Factor analysis revealed three interpretable factors: "resistance/control impairment," "obsession," and "interference."
    • The derived subscale scores demonstrated internal consistency and distinctiveness from other baseline measures.
    • Subscale scores predicted relapse, differentiated treatment groups (naltrexone vs. placebo), and predicted the weekly hazard for heavy drinking.

    Conclusions:

    • The three OCDS factors, estimated via summated scoring, are internally consistent and distinctive.
    • OCDS subscale scores possess utility as predictor or outcome variables in alcoholism treatment research.
    • Further research is needed to confirm the long-term predictive validity of OCDS assessments.