Further Psychometric Properties of the Tourette?s Disorder Scale-Parent Rated Version (TODS-PR)

Abstract

This study evaluated the psychometric properties of the Tourette's Disorder Scale-Parent Rated (TODS-PR), a 15-item parent-rated instrument that assesses a range of common symptoms seen in childhood Tourette's Disorder (TD) patients including tics, obsessions, compulsions, inattention, hyperactivity, aggression, and emotional disturbances. Participants were 67 children and adolescents ages 6-17 years who were diagnosed with TD and/or OCD and seen as a part of a larger study. Confirmatory factor analyses supported the original 4-factor structure of the TODS-PR with some slight re-specification of factor content. Internal consistencies were acceptable for the TODS-PR Total Score and factors. The TODS-PR Total Score and factors showed good convergent validity with other measures of symptomatology and impairment. These findings suggest that the TODS-PR is a reliable and valid parent-rating scale for assessing TD symptoms.

Assessment of Pediatric Obsessive-Compulsive Disorder: A Critical Review of Current Methodology

“…50 In addition, the four-item TODS-PR OCD Factor score correlates significantly with the CY-BOCS Total Score, Obsession severity score, and Compulsion severity score, as well as the Clinical Global Impression (CGI) 51 scale. However, the four-item TODS-PR OCD Factor scale also correlates significantly with depressive symptoms (p < .001).…”

“…In fact, factor-analytic studies have supported the presence of an OCD factor in addition to the factors representing Aggression, ADHD, and Tics. 13,50 However, the studies found discrepant results with regard to the composition of this factor, and further research is needed to confirm the underlying factor composition. The TODS-PR can be completed by parents in approximately 5 min.…”

Further Psychometric Examination of the Tourette’s Disorder Scales

“…Psychometric properties are reviewed in detail above. For this study, the four-factor subscales (i.e., Tics, OCD, ADHD, and Aggression subscales) identified by Storch et al [17] were utilized for analyses. The TODS total score reflects a quick measure of global distress across dimensions most commonly seen in children with tic disorders.…”

“…Two psychometric studies have been published on the TODS thus far--one on both the TODS-CR and TODS-PR [16], and one on the TODS-PR only. [17] A four-factor model has been identified with factors named Aggression, Attention Deficit Hyperactivity Disorder (ADHD), Obsessive-Compulsive Disorder (OCD), and Tics. [16,17] The TODS Total Score has demonstrated excellent internal consistency (a = 0.92 for the TODS-PR, a = 0.93 for the TODS-CR) and sensitivity to treatment changes.…”

“…[17] A four-factor model has been identified with factors named Aggression, Attention Deficit Hyperactivity Disorder (ADHD), Obsessive-Compulsive Disorder (OCD), and Tics. [16,17] The TODS Total Score has demonstrated excellent internal consistency (a = 0.92 for the TODS-PR, a = 0.93 for the TODS-CR) and sensitivity to treatment changes. [16,18] Interrater reliability of the TODS-CR has ranged from 70 to 0.94 across items.…”