Factor-analytic study of the Yale Global Tic Severity Scale.
We report on the factor structure of the Yale Global Tic Severity Scale. Participants were 76 children and adolescents diagnosed with tic disorders. Overall, the model proposed by Leckman et al. [Leckman, J.F., Riddle, M.A., Hardin, M.T., Ort, S.I., Swartz, K.L., Stevenson, J., Cohen, D.J., 1989. The Yale Global Tic Severity Scale: initial testing of a clinician-rated scale of tic severity. Journal of the American Academy of Child and Adolescent Psychiatry 28, 566-573.] represented an adequate fit. The internal consistency of the factors was acceptable and the convergent and divergent validity was supported vis-à-vis correlations with parent ratings of Tourette's Disorder symptoms. These findings support the use of the original scoring structure in assessing pediatric tic severity.
Storch
Eric A
EA
Department of Psychiatry, University of Florida, Gainesville, FL 32610, USA. estorch@psychiatry.ufl.edu
Murphy
Tanya K
TK
Fernandez
Melanie
M
Krishnan
Mohan
M
Geffken
Gary R
GR
Kellgren
Ashley R
AR
Goodman
Wayne K
WK
D000293:Adolescent; D002648:Child; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D005879:Tourette Syndrome / Q000175:diagnosis*