article

A short form of the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE): development and cross-validation

Psychological Medicine · 1994 · Vol. 24(1) · pp. 145–153

Anthony F. Jorm✉(National University)

Abstract

Data from four studies were used to assess the psychometric properties of the 26 IQCODE items. The items were assessed in terms of item-total correlations, test-retest reliabilities, correlations with indicators of current cognitive functioning and correlations with indicators of premorbid cognitive functioning. These data were used to develop a 16-item short form. The short form was cross-validated in a new sample using dementia/delirium diagnosis as the validity standard. It was found to perform as well as the long form.

Dementia and Cognitive Impairment Research Intensive Care Unit Cognitive Disorders Frailty in Older AdultsPsychologyDementiaPsychometricsCognitionShort FormsClinical psychologyDeliriumTest (biology)Test validityCognitive test

MeSH terms

AgedCognition DisordersDementiaEmploymentHumansMemory DisordersPsychiatric Status Rating ScalesSurveys and QuestionnairesReproducibility of ResultsGeriatric Assessment

Citations

1,209

FWCI

2.20

field-weighted impact

References

Percentile

87%

vs. same field & year

Citations per year

Cited by

National Institute of Neurological Disorders and Stroke–Canadian Stroke Network Vascular Cognitive Impairment Harmonization Standards