Informant ratings of cognitive decline in old age: validation against change on cognitive tests over 7 to 8 years
Background. Informant questionnaires on cognitive decline are increasingly used as screening tests for dementia. Informants can provide a longitudinal perspective that is not possible with cognitive screening tests administered at one point in time. However, there are limited data on the validity of such questionnaires when judged against longitudinal change on cognitive tests. Methods. A community sample of elderly people aged ≥ 70 was assessed on cognitive tests at baseline and after a...[Show more]
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