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The recency ratio as predictor of early MCI.
International Psychogeriatrics 2018 April 19
ABSTRACTObjectives:Individuals with Alzheimer's disease (AD) present poor immediate primacy recall accompanied by intact or exaggerated recency, which then tends to decline after a delay. Bruno et al. (Journal of Clinical and Experimental Neuropsychology, Vol. 38, 2016, pp. 967-973) have shown that higher ratio scores between immediate and delayed recency (i.e. the recency ratio; Rr) are associated with cognitive decline in high-functioning older individuals. We tested whether Rr predicted conversion to early mild cognitive impairment (early MCI) from a cognitively healthy baseline.
DESIGN: Data were analyzed longitudinally with binomial regression. Baseline scores were used to predict conversion to early MCI after approximately nine years.
SETTING: Data were collected at the Wisconsin Registry of Alzheimer's Prevention, in Madison, Wisconsin.
PARTICIPANTS: For the study, 427 individuals were included in the analysis; all participants were 50 years of age or older and cognitively intact at baseline, and were native English speakers.
MEASUREMENTS: Memory data were collected using the Rey's Auditory Verbal Learning Test, and the early MCI diagnosis was obtained via consensus conference.
RESULTS: Our results showed that higher Rr scores are correlated with greater risk of later early MCI diagnosis, and this association is independent of total recall performance.
CONCLUSIONS: Rr is an emerging cognitive marker of cognitive decline.
DESIGN: Data were analyzed longitudinally with binomial regression. Baseline scores were used to predict conversion to early MCI after approximately nine years.
SETTING: Data were collected at the Wisconsin Registry of Alzheimer's Prevention, in Madison, Wisconsin.
PARTICIPANTS: For the study, 427 individuals were included in the analysis; all participants were 50 years of age or older and cognitively intact at baseline, and were native English speakers.
MEASUREMENTS: Memory data were collected using the Rey's Auditory Verbal Learning Test, and the early MCI diagnosis was obtained via consensus conference.
RESULTS: Our results showed that higher Rr scores are correlated with greater risk of later early MCI diagnosis, and this association is independent of total recall performance.
CONCLUSIONS: Rr is an emerging cognitive marker of cognitive decline.
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