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Interrater Reliability of the Clinical Dementia Rating in a Multicenter Trial
Author(s) -
Rockwood Kenneth,
Strang David,
MacKnight Chris,
Downer Robert,
Morris John C.
Publication year - 2000
Publication title -
journal of the american geriatrics society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.992
H-Index - 232
eISSN - 1532-5415
pISSN - 0002-8614
DOI - 10.1111/j.1532-5415.2000.tb05004.x
Subject(s) - inter rater reliability , medicine , clinical dementia rating , dementia , clinical trial , kappa , observational study , physical therapy , disease , rating scale , psychology , developmental psychology , linguistics , philosophy
OBJECTIVE: To test the interrater reliability of the Clinical Dementia Rating (CDR) in a multicenter clinical trial. DESIGN: Observational study. SETTING: Training session for a multicenter trial of milameline, a direct muscarinic agonist, in the treatment of Alzheimer's disease. PARTICIPANTS: Twenty‐four raters (physicians and nurses) familiar with drug trials and expert in the care of patients with Alzheimer's disease. METHODS: Independent scoring of the CDR using four videotaped CDR interviews. OUTCOME MEASURE: Interrater reliability, as tested by the Kappa statistic RESULTS: The overall interrater reliability was 0.62. Within the CDR domains, the global kappas ranged from 0.33 ± 0.06 to 0.88 ± 0.06. CONCLUSIONS: The data support moderate to high overall interrater reliability but show important difficulties in the reliable assessment of early dementia. J Am Geriatr Soc 48: 558–559, 2000 .