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Policy and programmatic importance of spatial alignment of data sources

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  • Ong, P.
  • Graham, M.
  • Houston, D.

Abstract

Geographic information systems have proven instrumental in assessing environmental impacts on individual and community health, but numerous methodological challenges are associated with analyses of highly localized phenomena in which spatially misaligned data are used. In a case study based on child care facility and traffic data for the Los Angeles metropolitan area, we assessed the extent of facility misclassification with spatially unreconciled data from 3 different governmental agencies in an attempt to identify child care centers in which young children are at risk from high concentrations of toxic vehicle-exhaust pollutants. Relative to geographically corrected data, unreconciled information produced a modest bias in terms of aggregated number of facilities at risk and a substantial number of false positives and negatives.

Suggested Citation

  • Ong, P. & Graham, M. & Houston, D., 2006. "Policy and programmatic importance of spatial alignment of data sources," American Journal of Public Health, American Public Health Association, vol. 96(3), pages 499-504.
    • Handle: RePEc:aph:ajpbhl:10.2105/ajph.2005.071373_9
    DOI: 10.2105/AJPH.2005.071373
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    Cited by:

    1. Douglas Houston & Marlon G Boarnet & Gavin Ferguson & Steven Spears, 2015. "Can compact rail transit corridors transform the automobile city? Planning for more sustainable travel in Los Angeles," Urban Studies, Urban Studies Journal Limited, vol. 52(5), pages 938-959, April.
    2. Forsyth, Ann & Lytle, Leslie & Van Riper, David, 2010. "Finding food: Issues and challenges in using Geographic Information Systems (GIS) to measure food access," The Journal of Transport and Land Use, Center for Transportation Studies, University of Minnesota, vol. 3(1), pages 43-65.
    3. Houston, Douglas & Krudysz, Margaret & Winer, Arthur, 2007. "Measurements of Diesel Truck Traffic Associated with Goods Movement," University of California Transportation Center, Working Papers qt9kv7231h, University of California Transportation Center.

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