Table 3 Validity of secondary data source as compared to ground-truth effort among 14 counties in rural Appalachia Kentucky 2011
Data Source and Type of Food Outlet | Sensitivity | 95% CI | PPV | 95% CI |
|---|---|---|---|---|
InfoUSA 2011 | Â | Â | Â | Â |
All Food Outlets | 0.96 | 0.89, 1.03 | 0.7 | 0.67,0.73 |
Grocery Store | 1.00 | 1.00, 1.00 | 0.38 | 0.32, 0.45 |
Super Market | 0.96 | 0.85, 1.07 | 0.87 | 0.83, 0.95 |
Super Center | 1.00 | 1.00, 1.00 | 1 | 1.00, 1.00 |
Convenience Store | 1.00 | 1.00, 1.00 | 0.56 | 0.48, 0.60 |
Gas station with food mart | 0.99 | 0.85, 1.08 | 0.74 | 0.69, 0.87 |
Fast-food and Fast-casual restaurants | 1.00 | 1.00 , 1.00 | 0.95 | 0.89, 1.02 |
Pizza Parlors | 0.96 | 0.82, 1.09 | 0.81 | 0.75, 0.89 |
Dollar Stores | 0.20 | 0.14, 0.24 | 1 | 1.00, 1.00 |
Farmer's Markets | 0.50 | 0.41, 0.62 | 1 | 1.00, 1.00 |