| Titre : | Accuracy and repeatability of commercial geocoding. (2004) |
| Auteurs : | Eric-A WHITSEL ; . DUANPING LIAO ; Gerardo HEISS ; Amanda-C HENLEY ; Kathryn-M ROSE ; Joy-L WOOD |
| Type de document : | Article |
| Dans : | American journal of epidemiology (vol. 160, n° 10, 2004) |
| Pagination : | 1023-1029 |
| Langues: | Anglais |
| Mots-clés : | Pollution atmosphérique ; Appareil circulatoire [pathologie] ; Epidémiologie ; Homme |
| Résumé : | [BDSP. Notice produite par INIST-CNRS 0R0x9ncG. Diffusion soumise à autorisation]. The authors estimated accuracy and repeatability of commercial geocoding to guide vendor selection in the Life Course Socioeconomic Status, Social Context and Cardiovascular Disease study (2001-2002). They submitted 1,032 participant addresses (97% in Maryland, Minnesota, Mississippi, or North Carolina) to vendor A twice over 9 months and measured repeatability as agreement between levels of address matching, discordance (%) between statistical tabulation areas, and median distance (d, in meters) and bearing (thêta, in degrees) between coordinates assigned on each occasion (H0 : sigmai=1 - n[thêtai/n]=180°). They also submitted 75 addresses of nearby air pollution monitors (77% urban/suburban ; 69% residential/commercial) to vendors A and B and then measured accuracy by comparing vendor-and US Environmental Protection Agency (EPA) - assigned geocodes using the above measures. Repeatability of geocodes assigned by vendor A was high (kappa=0.90 ; census block group discordance=5% ; d<1 m ; thêta=177°). The match rate for EPA monitor addresses was higher for vendor B versus A (88% vs. 76%), but discordance at census block group, tract, and county levels also was, respectively, 1.4-1.9-and 5.0-fold higher for vendor B. Moreover, coordinates assigned by vendor B were further from those assigned by the EPA (d=212 m vs. 149 m ; thêta=131° vs. 171°). These findings suggest that match rates, repeatability, and accuracy should be used to guide vendor selection. |
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