The Tourette's Disorder Scale (TODS): Development, Reliability, and Validity

To address the lack of a simple and standardized instrument to assess overall illness severity of Tourette's disorder (TD), the authors developed and tested a 15-item scale to measure a broad range of common symptoms including tics, inattention, hyperactivity, obsessions, compulsions, aggressio...

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Bibliographic Details
Published in:Assessment (Odessa, Fla.) Fla.), 2003-09, Vol.10 (3), p.273-287
Main Authors: Shytle, R. Douglas, Silver, Archie A., Sheehan, Kathy Harnett, Wilkinson, Berney J., Newman, Mary, Sanberg, Paul R., Sheehan, David
Format: Article
Language:English
Subjects:
Adolescent
Child
Double-Blind Method
Female
Humans
Interview, Psychological
Male
Psychological Tests
Sensitivity and Specificity
Severity of Illness Index
Tourette Syndrome - psychology
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Summary:To address the lack of a simple and standardized instrument to assess overall illness severity of Tourette's disorder (TD), the authors developed and tested a 15-item scale to measure a broad range of common symptoms including tics, inattention, hyperactivity, obsessions, compulsions, aggression, and emotional symptoms. Independent investigators used the 15-item Tourette's Disorder Scale (TODS) to assess 60 TD patients who were taking part in a double-blind placebo-controlled multicenter 8-week treatment study. Interrater reliability, internal consistency, convergent and discriminant validity, and sensitivity to change were examined. The TODS was associated with good interrater reliability, excellent internal consistency, and favorable levels of validity and sensitivity to change. Individual TODS items showed good convergent and discriminant validity against other measures. The TODS is a simple, efficient way for clinicians and parents to rate the severity of multiple symptoms commonly found in patients with Tourette's disorder.
ISSN:1073-1911
1552-3489
DOI:10.1177/1073191103255497