Subjective memory is useful to detect cognitive deficits not apparent on objective tests. This research evaluates whether memory rated by an interviewer predicts incident dementia. Health and Retirement Study participants without cognitive impairment at baseline whose memory was rated by the interviewer were analyzed (N = 12,749). Worse interviewer-rated memory was associated with higher risk of incident dementia over 15 years (HR = 1.40, 95% CI = 1.27–1.54). The association was evident even among participants in the top quartile of objective memory performance (HR = 1.71, 95% CI = 1.26–2.32). Interviewer-rated memory may be a low-cost supplement to neuropsychological evaluation to predict dementia risk beyond self-reports and objective cognitive testing.
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