Short-term longitudinal trends in cognitive performance in older adults with type 2 diabetes.
Type 2 diabetes is associated with cognitive deficits, although inconsistently across neuropsychological domains. We examined 3-year longitudinal data from the Victoria Longitudinal Study, comparing diabetes (n = 28) and control (n = 272) older adults on a comprehensive neuropsychological battery. Assessing potential change and stability, we found that (a) baseline diabetes group deficits in semantic speed and speed-intensive executive function were preserved, (b) new average deficits for reaction time and nonspeeded executive function appeared, and (c) no differential short-term change was observed. It is clinically and theoretically important to examine sequential change in multiple domains over time.
Fischer
Ashley L
AL
Department of Psychology, University of Alberta, Edmonton, Alberta, Canada.
de Frias
Cindy M
CM
Yeung
Sophie E
SE
Dixon
Roger A
RA
D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology*; D003924:Diabetes Mellitus, Type 2 / Q000150:complications*; D056344:Executive Function / Q000502:physiology; D005260:Female; D015577:Geriatric Assessment; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008568:Memory / Q000502:physiology; D008875:Middle Aged; D009483:Neuropsychological Tests; D011930:Reaction Time / Q000502:physiology; D015203:Reproducibility of Results; D013223:Statistics as Topic; D013997:Time Factors; D014705:Verbal Behavior / Q000502:physiology