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Are self-reported neighbourhood characteristics associated with onset of functional limitations in older adults with or without memory impairment?

Abstract：

BACKGROUND:Neighbourhood resources may preserve functional independence in older adults, but little is known about whether benefits differ for individuals with normal and impaired memory. We evaluated the extent to which neighbourhood context was related to onset of instrumental and basic activities of daily living (I/ADL) limitations and whether relationships were modified by memory impairment. METHODS:Health and Retirement Study participants 50+ years of age without baseline I/ADL limitations (n=8726 for IADL and n=8345 for ADL models) were interviewed biennially for up to 8 years. Self-reported neighbourhood characteristics were scaled from 0 (worst) to 1 (best). Memory, assessed by direct and proxy cognitive assessments, was dichotomised at the 20th centile. We used pooled logistic regression models, adjusted for demographics and individual characteristics. RESULTS:Low neighbourhood physical disorder (OR=0.51 (95% CI: 0.37 to 0.69)), high social cohesion (OR=0.46 (0.34 to 0.62)), and high safety (OR=0.59 (0.46 to 0.76)) were associated with reduced incidence of IADL limitations. These neighbourhood characteristics were also associated with lower incidence of ADL limitations (disorder OR=0.59 (0.43 to 0.81)); social cohesion OR=0.60 (0.45 to 0.81)); safety OR=0.74 (0.58 to 0.93)). High social ties were not related to ADLs (OR=1.01(0.80 to 1.28)) or IADLs (OR=0.93(0.74 to 1.17)). The benefits of these neighbourhood characteristics for ADLs were similar among those with and without memory impairment but primarily observed among those without memory impairment for IADLs. CONCLUSIONS:Older adults living in neighbourhoods with low physical disorder, high social cohesion and high safety experience lower incidence of IADL and ADL limitations. Memory status modified the estimated effects of neighbourhood characteristics on IADL but not ADL limitations.

journal_name

J Epidemiol Community Health

journal_title

Journal of epidemiology and community health

authors

Nguyen TT,Rist PM,Glymour MM

doi

10.1136/jech-2016-207241

subject

Has Abstract

pub_date

2016-10-01 00:00:00

pages

1017-23

issue

eissn

0143-005X

issn

1470-2738

pii

jech-2016-207241

journal_volume

pub_type

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Are self-reported neighbourhood characteristics associated with onset of functional limitations in older adults with or without memory impairment?