Research article
Perceived neighborhood safety and incident mobility disability among elders: the hazards of poverty
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* Corresponding authors: Cheryl R Clark crclark@partners.org - Lisa F Berkman lberkman@hsph.harvard.edu
1 Center for Community Health and Health Equity, Division of General Medicine and Primary Care, Brigham and Women's Faulkner Hospitalist Program, Brigham and Women's Hospital, Boston, Massachusetts, USA
2 Department of Society, Human Development and Health, Harvard School of Public Health, Boston, Massachusetts, USA
3 Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts, USA
BMC Public Health 2009, 9:162 doi:10.1186/1471-2458-9-162
Published: 28 May 2009Abstract
Background
We investigated whether lack of perceived neighborhood safety due to crime, or living in high crime neighborhoods was associated with incident mobility disability in elderly populations. We hypothesized that low-income elders and elders at retirement age (65 – 74) would be at greatest risk of mobility disability onset in the face of perceived or measured crime-related safety hazards.
Methods
We conducted the study in the New Haven Established Populations for Epidemiologic Studies of the Elderly (EPESE), a longitudinal cohort study of community-dwelling elders aged 65 and older who were residents of New Haven, Connecticut in 1982. Elders were interviewed beginning in 1982 to assess mobility (ability to climb stairs and walk a half mile), perceptions of their neighborhood safety due to crime, annual household income, lifestyle characteristics (smoking, alcohol use, physical activity), and the presence of chronic co-morbid conditions. Additionally, we collected baseline data on neighborhood crime events from the New Haven Register newspaper in 1982 to measure local area crime rates at the census tract level.
Results
At baseline in 1982, 1,884 elders were without mobility disability. After 8 years of follow-up, perceiving safety hazards was associated with increased risk of mobility disability among elders at retirement age whose incomes were below the federal poverty line (HR 1.56, 95% CI 1.02 – 2.37). No effect of perceived safety hazards was found among elders at retirement age whose incomes were above the poverty line. No effect of living in neighborhoods with high crime rates (measured by newspaper reports) was found in any sub-group.
Conclusion
Perceiving a safety hazard due to neighborhood crime was associated with increased risk of incident mobility disability among impoverished elders near retirement age. Consistent with prior literature, retirement age appears to be a vulnerable period with respect to the effect of neighborhood conditions on elder health. Community violence prevention activities should address perceived safety among vulnerable populations, such as low-income elders at retirement age, to reduce future risks of mobility disability.