Journal article
Examination of How Neighborhood Definition Influences Measurements of Youths Access to Tobacco Retailers: A Methodological Note on Spatial Misclassification
American journal of epidemiology, v 179(3), pp 373-381
01 Feb 2014
PMID: 24148710
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Measurements of neighborhood exposures likely vary depending on the definition of neighborhood selected. This study examined the extent to which neighborhood definition influences findings regarding spatial accessibility to tobacco retailers among youth. We defined spatial accessibility to tobacco retailers (i.e., tobacco retail density, closest tobacco retailer, and average distance to the closest 5 tobacco retailers) on the basis of circular and network buffers of 400 m and 800 m, census block groups, and census tracts by using residential addresses from the 2008 Boston Youth Survey Geospatial Dataset (n 1,292). Friedman tests (to compare overall differences in neighborhood definitions) were applied. There were differences in measurements of youths access to tobacco retailers according to the selected neighborhood definitions, and these were marked for the 2 spatial proximity measures (both P 0.01 for all differences). For example, the median average distance to the closest 5 tobacco retailers was 381.50 m when using specific home addresses, 414.00 m when using census block groups, and 482.50 m when using census tracts, illustrating how neighborhood definition influences the measurement of spatial accessibility to tobacco retailers. These analyses suggest that, whenever possible, egocentric neighborhood definitions should be used. The use of larger administrative neighborhood definitions can bias exposure estimates for proximity measures.
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Details
- Title
- Examination of How Neighborhood Definition Influences Measurements of Youths Access to Tobacco Retailers: A Methodological Note on Spatial Misclassification
- Creators
- Dustin T. Duncan - New York UniversityIchiro Kawachi - New York UniversityS. V. Subramanian - New York UniversityJared Aldstadt - New York UniversitySteven J. Melly - Harvard UniversityDavid R. Williams - Harvard University
- Publication Details
- American journal of epidemiology, v 179(3), pp 373-381
- Publisher
- Oxford Univ Press
- Number of pages
- 9
- Grant note
- Alonzo Smythe Yerby Postdoctoral Fellowship at Harvard School of Public Health U49CE000740 / NATIONAL CENTER FOR INJURY PREVENTION AND CONTROL; United States Department of Health & Human Services; Centers for Disease Control & Prevention - USA 1P50CA 148596 / National Cancer Institute; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Cancer Institute (NCI) P50CA148596 / NATIONAL CANCER INSTITUTE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Cancer Institute (NCI)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Urban Health Collaborative
- Web of Science ID
- WOS:000330190600014
- Scopus ID
- 2-s2.0-84892752522
- Other Identifier
- 991021875343504721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Public, Environmental & Occupational Health