Table 5 By level of urbanization, evidence for validity of five secondary retail food data sources for enumerating retail food outlets in comparison to ground-truthed data for open and closed outlets in six State Designated Tribal Statistical Areas and two US Census-Designated Places in North Carolina, 2009-2010 (PPV stands for Positive Predictive Value)
Secondary Data Source | Level of Urbanization (n=total number of food outlets by outlet type) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Small Town & Rural (n=364) | Large Town (n=410) | Sub-Urban (n=105) | Urban (n=12) | |||||||||||||
Agreement Statistics (95% Confidence Interval) | ||||||||||||||||
Sensitivity (95% CI*) | PPV (95% CI*) | Concordance (95% CI*) | Kappa (95% CI*) | Sensitivity (95% CI*) | PPV (95% CI*) | Concordance (95% CI*) | Kappa (95% CI*) | Sensitivity (95% CI*) | PPV (95% CI*) | Concordance (95% CI*) | Kappa (95% CI*) | Sensitivity (95% CI*) | PPV (95% CI*) | Concordance (95% CI*) | Kappa (95% CI*) | |
Local Health County | 0.65 | 0.47 | 0.40 | 0.44 | 0.67 | 0.51 | 0.44 | 0.38 | 0.66 | 0.54 | 0.45 | 0.47 | 0.38 | 0.27 | 0.25 | 0.10 |
| Â | (0.59, 0.72) | (0.41, 0.53) | (0.35, 0.45) | (0.35, 0.52) | (0.61, 0.72) | (0.46, 0.56) | (0.40, 0.49) | (0.30, 0.47) | (0.54, 0.77) | (0.43, 0.65) | (0.35, 0.55) | (0.32, 0.63) | (0.08, 0.76) | (0.06, 0.61) | (0.06, 0.57) | (-0.39, 0.59) |
State Agriculture Department | 0.18 | 0.13 | 0.11 | 0.05 | 0.17 | 0.13 | 0.12 | 0.08 | 0.13 | 0.10 | 0.09 | 0.07 | 0.25 | 0.18 | 0.17 | 0.00 |
| Â | (0.13, 0.23) | (0.09, 0.17) | 0.08, 0.14 | (-0.02, 0.11) | (0.13, 0.22) | (0.10, 0.17) | (0.09, 0.15) | (0.03, 0.12) | (0.06, 0.23) | (0.05, 0.19) | (0.04, 0.16) | (-0.00, 0.14) | (0.03, 0.65) | (0.02, 0.52) | (0.02, 0.48) | (-0.44, 0.44) |
ReferenceUSA | 0.88 | 0.63 | 0.54 | 0.61 | 0.90 | 0.68 | 0.60 | 0.59 | 0.92 | 0.75 | 0.62 | 0.74 | 0.75 | 0.55 | 0.50 | -0.29 |
| Â | (0.83, 0.92) | (0.58, 0.68) | (0.48, 0.59) | (0.52, 0.69) | (0.86, 0.93) | (0.63, 0.73) | (0.55, 0.64) | (0.50, 0.67) | (0.83, 0.97) | (0.64, 0.83) | (0.52, 0.71) | (0.60, 0.88) | (0.35, 0.97) | (0.23, 0.83) | (0.21, 0.79) | (-0.62, 0.04) |
Dun & Bradstreet | 0.44 | 0.32 | 0.27 | 0.31 | 0.42 | 0.32 | 0.28 | 0.20 | 0.31 | 0.25 | 0.21 | -0.62 | 0.25 | 0.18 | 0.17 | -0.67 |
| Â | (0.38, 0.51) | (0.27, 0.37) | (0.22, 0.32) | (0.23, 0.38) | (0.36, 0.48) | (0.27, 0.37) | (0.24, 0.32) | (0.12, 0.27) | (0.20, 0.43) | (0.17, 0.36) | (0.14, 0.30) | (-0.75, -0.49) | (0.03, 0.65) | (0.02, 0.52) | (0.02, 0.48) | (-1.11, -0.22) |
Online Yellow Pages | 0.69 | 0.49 | 0.42 | 0.38 | 0.46 | 0.35 | 0.30 | 0.15 | 0.52 | 0.42 | 0.35 | 0.22 | 0.12 | 0.09 | 0.08 | -0.91 |
| Â | (0.62, 0.74) | (0.44, 0.55) | (0.37, 0.47) | (0.28, 0.47) | (0.40, 0.52) | (0.30, 0.40) | (0.26, 0.35) | (0.07, 0.23) | (0.40, 0.64) | (0.32, 0.54) | (0.26, 0.45) | (0.05, 0.38) | (0.00, 0.53) | (0.00, 0.41) | (0.00, 0.38) | (-0.49, 0.31) |