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Table 6 Purchased and final business counts for InfoUSA (food stores) and Dun and Bradstreet (restaurants), 2007–2014

From: A step-by-step approach to improve data quality when using commercial business lists to characterize retail food environments

  Purchased data Final data
1 2 3 4 5 6
Count N By SIC code N (%) By name N (%) Count Unuseda Percent unused
InfoUSA 2,847,339 2,690,245 (94.5) 157,094 (5.5) 2,341,030 506,309 17.5
Dun and Bradstreet 2,143,147 2,104,369 (98.2) 38,778 (1.8) 2,023,032 120,115 5.6
  1. aRecords were unused in the final dataset if they had insufficiently accurate geocoding, were duplicates, or were purchased in error