Self-Reported Sensory Impairments and Changes in Cognitive Performance: A Longitudinal 6-Year Follow-Up Study of English Community-Dwelling Adults Aged ⩾50 Years.
OBJECTIVE: To investigate the influence of single and dual sensory impairments prospectively on cognition in adults aged ⩾50 years. METHOD: Community-dwelling English adults ( n = 4,621) were followed up from 2008 to 2014. Self-reported hearing and vision were collected in 2008. Change in cognitive performance on working memory and executive function between 2008 and 2014 was evaluated. RESULTS: Compared with good hearing and good vision, respectively, poor hearing and poor vision were associated with worse cognitive function (hearing: unstandardized coefficient B = 0.83, 95% Confidence Interval [CI] = [0.29, 1.37]; vision: B = 1.61, 95% CI = [0.92, 2.29] adjusted for age, sex, baseline cognition). Compared with no sensory impairment, dual sensory impairment was associated with worse cognition ( B = 2.30, 95% CI = [1.21, 3.39] adjusted for age, sex, baseline cognition). All associations remained after further adjustment for sociodemographic characteristics, lifestyle factors, chronic conditions, falls, mobility, depression, and lack of companionship. DISCUSSION: The findings are important as age-related sensory impairments are often preventable or modifiable, which may prevent or delay cognitive impairment
