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Related Experiment Videos

The Yale-Brown Obsessive-Compulsive Scale: a reliability and validity study.

S W Kim1, M W Dysken, M Kuskowski

  • 1Dept. of Psychiatry, Hennepin County Medical Center, Minneapolis, MN 55415.

Psychiatry Research
|October 1, 1990
PubMed
Summary
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The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) demonstrated higher reliability and better correlation with global ratings compared to the Leyton Obsessional Inventory (LOI) in measuring obsessive-compulsive disorder symptom changes.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Obsessive-compulsive disorder (OCD) is a debilitating mental health condition.
  • Accurate assessment of treatment efficacy is crucial for OCD management.
  • Existing instruments like the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and Leyton Obsessional Inventory (LOI) are used for symptom evaluation.

Purpose of the Study:

  • To compare the reliability and validity of the Y-BOCS and LOI in assessing clinical change in OCD patients.
  • To determine which scale better reflects treatment response.

Main Methods:

  • Twenty-eight non-depressed OCD patients participated.
  • The Y-BOCS and LOI were administered weekly for three weeks.
  • Both scales were reassessed after a 14-week clomipramine trial, alongside global ratings.

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Main Results:

  • The Y-BOCS change scores showed significantly higher correlations with global ratings than the LOI.
  • The Y-BOCS exhibited greater reliability compared to the LOI in measuring OCD symptom fluctuations.
  • These findings were consistent at baseline and post-treatment assessments.

Conclusions:

  • The Y-BOCS is a more reliable and sensitive measure of clinical change in OCD than the LOI.
  • The Y-BOCS is recommended for assessing treatment outcomes in obsessive-compulsive disorder research and clinical practice.