On the wrong side of the tracts? Evaluating the accuracy of geocoding in public health research.

Abstract:

OBJECTIVES:This study sought to determine the accuracy of geocoding for public health databases. METHODS:A test file of 70 addresses, 50 of which involved errors, was generated, and the file was geocoded to the census tract and block group levels by 4 commercial geocoding firms. Also, the "real world" accuracy of the best-performing firm was evaluated. RESULTS:Accuracy rates in regard to geocoding of the test file ranged from 44% (95% confidence interval [CI] = 32%, 56%) to 84% (95% CI = 73%, 92%). The geocoding firm identified as having the best accuracy rate correctly geocoded 96% of the addresses obtained from the public health databases. CONCLUSIONS:Public health studies involving geocoded databases should evaluate and report on methods used to verify accuracy.

journal_name

Am J Public Health

authors

Krieger N,Waterman P,Lemieux K,Zierler S,Hogan JW

doi

10.2105/ajph.91.7.1114

subject

Has Abstract

pub_date

2001-07-01 00:00:00

pages

1114-6

issue

7

eissn

0090-0036

issn

1541-0048

journal_volume

91

pub_type

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