Accuracy of city postal code coordinates as a proxy for location of residence

被引：70

作者：

Bow C.J.D. ^{[2
,4
]}

Waters N.M. ^{[2
,4
]}

Faris P.D. ^{[4
]}

Seidel J.E. ^{[3
,4
]}

Galbraith P.D. ^{[4
]}

Knudtson M.L. ^{[1
,4
]}

Ghali W.A. ^{[1
,3
,4
]}

机构：

[1] Department of Medicine, University of Calgary, Calgary, Alta. T2N 4N1

[2] Department of Geography, University of Calgary, Calgary, Alta T2N 1N4

[3] Dept. of Community Health Sciences, University of Calgary, Calgary, Alta. T2N 4N1

[4] Centre for Health/Policy Studies, Faculty of Medicine, University of Calgary, Calgary, Alta. T2N 4N1

来源：

International Journal of Health Geographics | / 3卷 / 1期

关键词：

Geographic location; GIS (Geographical Information Systems); Postal code;

D O I：

10.1186/1476-072X-3-5

中图分类号：

学科分类号：

摘要：

Background: Health studies sometimes rely on postal code location as a proxy for the location of residence. This study compares the postal code location to that of the street address using a database from the Alberta Provincial Project for Outcome Assessment in Coronary Heart Disease (APPROACH®). Cardiac catheterization cases in an urban Canadian City were used for calendar year 1999. We determined location in meters for both the address (using the City of Calgary Street Network File in ArcView 3.2) and postal code location (using Statistic Canada's Postal Code Conversion File). Results: The distance between the two estimates of location for each case were measured and it was found that 87.9% of the postal code locations were within 200 meters of the true address location (straight line distances) and 96.5% were within 500 meters of the address location (straight line distances). Conclusions: We conclude that postal code locations are a reasonably accurate proxy for address location. However, there may be research questions for which a more accurate description of location is required. © 2004 Bow et al; licensee BioMed Central Ltd.

引用

页数：9

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