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. 2021 Apr 30:23:101391.
doi: 10.1016/j.pmedr.2021.101391. eCollection 2021 Sep.

The association of neighborhood walkability with health outcomes in older adults after acute myocardial infarction: The SILVER-AMI study

Brita Roy  1   2 , Alexandra M Hajduk  1 , Sui Tsang  1 , Mary Geda  1 , Carley Riley  3   4 , Harlan M Krumholz  5   6   7 , Sarwat I Chaudhry  1
Affiliations

The association of neighborhood walkability with health outcomes in older adults after acute myocardial infarction: The SILVER-AMI study

Brita Roy et al. Prev Med Rep. .

Abstract

Physical activity and social support are associated with better outcomes after surviving acute myocardial infarction (AMI), and greater walkability has been associated with activity and support. We used data from the SILVER-AMI study (November 2014-June 2017), a longitudinal cohort of community-living adults ≥ 75 years hospitalized for AMI to assess associations of neighborhood walkability with health outcomes, and to assess whether physical activity and social support mediate this relationship, if it exists. We included data from 1345 participants who were not bedbound, were discharged home, and for whom we successfully linked walkability scores (from Walk Score®) for their home census block. Our primary outcome was hospital-free survival time (HFST) at six months after discharge; secondary outcomes included physical and mental health at six months, assessed using SF-12. Physical activity and social support were measured at baseline. Covariates included cognition, functioning, comorbidities, participation in rehabilitation or physical therapy, and demographics. We employed survival analysis to examine associations between walkability and HFST, before and after adjustment for covariates; we repeated analyses using linear regression with physical and mental health as outcomes. In adjusted models, walkability was not associated with physical health (ß = 0.010; 95% CI: -0.027, 0.047), mental health (ß = -0.08; 95% CI: -0.175, -0.013), or HFST (ß = 0.008; 95% CI: -0.023, 0.009). Social support was associated with mental health in adjusted models. Neighborhood walkability was not predictive of outcomes among older adults with existing coronary disease, suggesting that among older adults, mobility limitations may supercede neighborhood walkability.

Keywords: Cardiovascular disease; Neighborhood environment; Older adults; Physical activity; Secondary prevention; Social support; Walkability.

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Conflict of interest statement

The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Drs. Roy and Riley report personal fees from Heluna Health, personal fees from the Institute for Healthcare Improvement, and grant funding from the Robert Wood Johnson Foundation and the Institute for Healthcare Improvement, outside the submitted work. Dr. Roy also reports grant funding from the National Heart, Lung, and Blood Institute outside the submitted work. Dr. Krumholz reports personal fees from UnitedHealth, personal fees from IBM Watson Health, personal fees from Element Science, personal fees from Aetna, personal fees from Facebook, personal fees from Siegfried & Jensen Law Firm, personal fees from Arnold & Porter Law Firm, personal fees from Ben C. Martin Law Firm, personal fees from National Center for Cardiovascular Diseases, Beijing, ownership of HugoHealth, ownership of Refactor Health, contracts from the Centers for Medicare & Medicaid Services, grants from Medtronic and the Food and Drug Administration, grants from Medtronic and Johnson and Johnson, grants from Shenzhen Center for Health Information, outside the submitted work. The other authors report no competing interests.

Figures

Fig. 1
Fig. 1
Hypothesized relaionships among neighborhood walkability, physical activity and social support, and health outcomes
See this image and copyright information in PMC

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