isDiagnosisFor Alzheimer's disease Clinical Dementia Rating Questionnaire CDISC Intellectual Product CDR01 A standardized rating scale developed by John C. Morris in 1997 to evaluate the severity of an individual's cognitive impairment. This instrument contains 6 areas which include memory, orientation, judgment and problem solving, community affairs, home and hobbies, and personal care. Each item is rated on a scale from 0 to 3 with 0 being none and 3 being severe. Clinical Dementia Rating Questionnaire CDR C102114 Clinical Dementia Rating (CDR) (Morris, JC. Clinical Dementia Rating: A reliable and valid diagnostic and staging measure for dementia of the Alzheimer type. International Psychogeriatrics 1997: 9, Suppl. 1, 173-176). C0451074 Clinical Dementia Rating Questionnaire Clinical or Research Assessment Questionnaire