title: Alternative calculation of the global clinical dementia rating.
abstract: The Clinical Dementia Rating (CDR) is a widely used instrument for rating the global severity of dementia, with scores in six independently rated categories used as a basis for computing a global score. We have found that the algorithms currently used to calculate the global score from the six component scores produce results that are sometimes inconsistent with the goals of the rating scale. We systematically analyzed these incongruities and developed an alternative algorithm that eliminates them while retaining the fundamental features of the original method.
authors.affiliation: Department of Neurology, School of Public Health, University of Michigan, Ann Arbor 48109-0316.
authors.forename: D J
authors.initials: DJ
authors.lastname: Gelb
authors.forename: R T
authors.initials: RT
authors.lastname: St Laurent
mesh_terms: D000368:Aged; D000465:Algorithms; D000544:Alzheimer Disease / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D003704:Dementia / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011594:Psychometrics; D012042:Registries; D015203:Reproducibility of Results