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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