Show simple item record

dc.contributor.authorLovasi, Gina S.en_US
dc.contributor.authorWeiss, Jeremy C.en_US
dc.contributor.authorHoskins, Richarden_US
dc.contributor.authorWhitsel, Eric A.en_US
dc.contributor.authorRice, Kennethen_US
dc.contributor.authorErickson, Craig F.en_US
dc.contributor.authorPsaty, Bruce M.en_US
dc.date.accessioned2010-05-06T20:04:12Z
dc.date.available2010-05-06T20:04:12Z
dc.date.issued2007en_US
dc.identifier.citationLovasi G, Weiss J, Hoskins R, et al. Comparing a single-stage geocoding method to a multi-stage geocoding method: how much and where do they disagree? International Journal of Health Geographics. 2007;6(1):12.en_US
dc.identifier.other10.1186/1476-072X-6-12en_US
dc.identifier.urihttp://www.ij-healthgeographics.com/content/6/1/12en_US
dc.identifier.urihttp://hdl.handle.net/1773/15828
dc.description.abstractBackground: Geocoding methods vary among spatial epidemiology studies. Errors in the geocoding process and differential match rates may reduce study validity. We compared two geocoding methods using 8,157 Washington State addresses. The multi-stage geocoding method implemented by the state health department used a sequence of local and national reference files. The single-stage method used a single national reference file. For each address geocoded by both methods, we measured the distance between the locations assigned by each method. Area-level characteristics were collected from census data, and modeled as predictors of the discordance between geocoded address coordinates. Results: The multi-stage method had a higher match rate than the single-stage method: 99% versus 95%. Of 7,686 addresses were geocoded by both methods, 96% were geocoded to the same census tract by both methods and 98% were geocoded to locations within 1 km of each other by the two methods. The distance between geocoded coordinates for the same address was higher in sparsely populated and low poverty areas, and counties with local reference files. Conclusion: The multi-stage geocoding method had a higher match rate than the single-stage method. An examination of differences in the location assigned to the same address suggested that study results may be most sensitive to the choice of geocoding method in sparsely populated or low-poverty areas.en_US
dc.description.sponsorshipContracts R01-HL043201, R01-HL068639, and T32-HL07902 from the National Heart, Lung, and Blood Institute, by grant R01-AG09556 from the National Institute on Aging, and by a University of Washington Royalty Research Fund Award.en_US
dc.language.isoen_USen_US
dc.titleComparing a single-stage geocoding method to a multi-stage geocoding method: how much and where do they disagree?en_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record