The Yale-Brown Obsessive-Compulsive Scale: measures of internal consistency.
We examined the construction of the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and performance of subscale items based on data from 204 patients with obsessive-compulsive disorder (OCD) who participated in a multicenter drug treatment study. Factor analysis was used to examine the relationship among the 10 items that make up the Y-BOCS instrument. Models were computed in which both two- and three-factor solutions were estimated. Within the two-factor solution analyses, the factor distribution was not so consistent as in the three-factor solution analyses, and a shift in the factor distribution was noted after treatment. In the three-factor solution analyses, an independent resistance construct emerged in addition to the obsessive and compulsive constructs. Examination of the postreatment factor scores showed that the Y-BOCS resistance items did not assess OCD symptom change as sensitively as the rest of the Y-BOCS items did.
Kim
S W
SW
Department of Psychiatry, Hennepin County Medical Center, Minneapolis, MN 55415.
Dysken
M W
MW
Pheley
A M
AM
Hoover
K M
KM
D000328:Adult; D002997:Clomipramine / Q000627:therapeutic use*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis* / Q000188:drug therapy*; D010919:Placebos; D011569:Psychiatric Status Rating Scales
D010919:Placebos; D002997:Clomipramine