Validity and reliability of the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) for dementia assessment in rural South Africa.

ABSTRACT: The Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE) is suitable for screening dementia, particularly in populations with limited education. However, its feasibility and psychometrics in South Africa remain unassessed. We analyzed 1309 index participant-informant dyads from the Health and Aging in Africa: Longitudinal Study of an International Network for the Demographic Evaluation of Populations and Their Health Community in South Africa study in rural South Africa, assessing IQCODE completeness, associations with index participant/informant characteristics, single-factor structure and reliability via factor analysis, and validity through correlations with neuropsychological tests. Index participants averaged 71.9 years, with > 50% lacking formal education. IQCODE miss

SUBMITTER: Guo M 

PROVIDER: S-EPMC12333867 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature