Sean D. Cleary|Sanaa Bhatty|Beth Broussard|Sarah Cristofaro|Claire Ramsay Wan|Michael T. Compton
Measuring insight through patient self-report: An in-depth analysis of the factor structure of the Birchwood Insight Scale
George Washington University|George Washington University|Lenox Hill Hospital|Emory University|Emory University|Lenox Hill Hospital|Hofstra University
little research focused item analysis factor structure commonly used measures insight examined factorial structure birchwood insight scale bis brief easytoadminister selfreport measure studied bis 327 firstepisode psychosis patients including test sample n163 validation sample n164 used data 100 patients chronic serious mental illnesses second external validation sample exploratory factor analysis conducted test subsample confirmatory factor analyses two validation samples confirmatory factor analyses firstepisode psychosis validation sample chronic serious mental illness sample indicated singlefactor solution seven items loading single factorwith item 1 symptoms made mind eliminatedwas bestfitting model seven eight original bis items loading single factor fit data well samples researchers using efficient measure patientreported insight assess item distributions factor structure bis samples potentially consider eliminating item 1