Performance of the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) as a screening test for dementia.
A 26-item informant questionnaire (IQCODE) and the Mini-Mental State Examination (MMSE) were compared as screening tests for dementia in a sample of 69 patients. Dementia diagnoses were made by both a clinician and a research interview using a computer algorithm to meet DSM-III-R and ICD-10 (Draft) criteria. The IQCODE was found to perform at least as well as the MMSE against all diagnoses and significantly better when judged against the algorithmic ICD-10 diagnoses. Also, the IQCODE was found to be uncontaminated by pre-morbid ability as estimated from the National Adult Reading Test and to have very high test-retest reliability after a delay of a day or more.
Jorm
A F
AF
NH & MRC Social Psychiatry Research Unit, Australian National University, Canberra.
Scott
R
R
Cullen
J S
JS
MacKinnon
A J
AJ
D000368:Aged; D000369:Aged, 80 and over; D001076:Aptitude; D003072:Cognition Disorders / Q000175:diagnosis* / Q000523:psychology*; D003704:Dementia / Q000175:diagnosis* / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008609:Mental Status Schedule / Q000706:statistics & numerical data*; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011594:Psychometrics; D012372:ROC Curve