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Related Experiment Videos

The Symptom Checklist-90: Obsessive-Compulsive Subscale: A reliability and validity study.

S W Kim1, M W Dysken, M Kuskowski

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

Psychiatry Research
|January 1, 1992
PubMed
Summary
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The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and NIMH-GOCS are more reliable than the SCL-90-OCS for measuring obsessive-compulsive disorder symptoms. The SCL-90-OCS may not effectively track symptom changes during treatment.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Obsessive-compulsive disorder (OCD) is a debilitating mental health condition.
  • Accurate assessment of OCD symptom severity and treatment response is crucial for effective patient care.
  • Existing instruments for measuring OCD symptoms require rigorous evaluation of their reliability and validity.

Purpose of the Study:

  • To compare the test-retest reliability and concurrent validity of three commonly used instruments for assessing obsessive-compulsive disorder (OCD) symptoms.
  • To evaluate the sensitivity of the Symptom Checklist-90-Obsessive-Compulsive Subscale (SCL-90-OCS) in detecting changes in OCD symptoms during treatment.
  • To determine the suitability of the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and the National Institute of Mental Health Global Obsessive-Compulsive Scale (NIMH-GOCS) as reliable measures for OCD.

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Main Methods:

  • A cohort of 23 nondepressed patients diagnosed with DSM-III obsessive-compulsive disorder participated in the study.
  • Patients completed the Y-BOCS, SCL-90, and NIMH-GOCS during a 2-week medication-free period and a 10-week double-blind drug treatment phase.
  • Test-retest reliability was assessed pretreatment, and posttreatment correlations were calculated between change scores of the instruments.

Main Results:

  • The Y-BOCS and NIMH-GOCS demonstrated significantly higher test-retest reliability compared to the SCL-90-OCS.
  • High and statistically significant correlations were found between change scores of the Y-BOCS and NIMH-GOCS.
  • The SCL-90-OCS showed poor correlations with the Y-BOCS, NIMH-GOCS, and global rating scales, indicating low sensitivity to treatment-induced symptom changes.

Conclusions:

  • The Y-BOCS and NIMH-GOCS are reliable and valid instruments for assessing OCD symptom severity and changes during treatment.
  • The SCL-90-OCS appears to be less sensitive and reliable for measuring treatment response in patients with obsessive-compulsive disorder.
  • Clinicians should consider the psychometric properties of assessment tools when monitoring OCD treatment efficacy.