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Health Place. 2014 Jul;28:38-44. doi: 10.1016/j.healthplace.2014.03.006. Epub 2014 Apr 17.

Field validation of secondary data sources for enumerating retail tobacco outlets in a state without tobacco outlet licensing.

Author information

1
Department of Health Behavior, University of North Carolina (UNC), Gillings School of Global Public Health, CB 7440, Chapel Hill, NC 27599-7440, USA. Electronic address: hdangelo@email.unc.edu.
2
National Institutes of Health, Division of Nutrition Research Coordination, Bethesda, MD, USA.
3
Department of Health Behavior, University of North Carolina (UNC), Gillings School of Global Public Health, CB 7440, Chapel Hill, NC 27599-7440, USA.
4
Department of Health Behavior, University of North Carolina (UNC), Gillings School of Global Public Health, CB 7440, Chapel Hill, NC 27599-7440, USA; UNC Lineberger Comprehensive Cancer Center, Chapel Hill, NC, USA.

Abstract

Identifying tobacco retail outlets for U.S. FDA compliance checks or calculating tobacco outlet density is difficult in the 13 States without tobacco retail licensing or where licensing lists are unavailable for research. This study uses primary data collection to identify tobacco outlets in three counties in a non-licensing state and validate two commercial secondary data sources. We calculated sensitivity and positive predictive values (PPV) to examine the evidence of validity for two secondary data sources, and conducted a geospatial analysis to determine correct allocation to census tract. ReferenceUSA had almost perfect sensitivity (0.82) while Dun & Bradstreet (D&B) had substantial sensitivity (0.69) for identifying tobacco outlets; combined, sensitivity improved to 0.89. D&B identified fewer "false positives" with a PPV of 0.82 compared to 0.71 for ReferenceUSA. More than 90% of the outlets identified by ReferenceUSA were geocoded to the correct census tract. Combining two commercial data sources resulted in enumeration of nearly 90% of tobacco outlets in a three county area. Commercial databases appear to provide a reasonably accurate way to identify tobacco outlets for enforcement operations and density estimation.

KEYWORDS:

Commercial secondary data; Evidence for validity; Tobacco outlets

PMID:
24742811
PMCID:
PMC4218843
DOI:
10.1016/j.healthplace.2014.03.006
[Indexed for MEDLINE]
Free PMC Article

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