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Clinical Trial
. 2003 Winter;13(4):463-70.
doi: 10.1089/104454603322724850.

A preliminary study of the Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children mania rating scale for children and adolescents

David Axelson  1 , Boris J Birmaher, David Brent, Susan Wassick, Christine Hoover, Jeffrey Bridge, Neal Ryan
Affiliations
Clinical Trial

A preliminary study of the Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children mania rating scale for children and adolescents

David Axelson et al. J Child Adolesc Psychopharmacol. 2003 Winter.

Abstract

Objective: To construct a mania rating scale designed for children and adolescents.

Methods: Fourteen questions from the Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present Episode (K-SADS-P) 1986 version plus a new item assessing mood lability were used to construct a clinician-rated mania rating scale (K-SADS-MRS). Interrater reliability was determined prospectively with 22 patients from a bipolar outpatient clinic. Sensitivity to treatment effects was determined in a separate cohort of 23 patients.

Results: Internal consistency (Cronbach's alpha = 0.94) and interrater reliability (intraclass correlation coefficient = 0.97 between two raters) were high. Convergent validity with the Clinical Global Impressions-Severity scale (bipolar version) was good (r(s)= 0.91, p < 0.001). Treatment responders had significantly greater reduction in K-SADS-MRS scores than nonresponders (-15.6 +/- 8.7 vs. 0.3 +/- 8.8), t(21) = 4.2, p < 0.001. The K-SADS-MRS scores differentiated bipolar patients who had clinically significant manic symptoms from those who did not, with a sensitivity of 87% and a specificity of 81%.

Conclusion: The K-SADS-MRS shows promise as a rating scale for measuring manic symptom severity in pediatric bipolar patients.

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