Table 3.
Percent Agreement, Kappa, and Prevalence- and Bias-Adjusted Kappa (PABAK) between Seven Binary Urban-Rural Measures defined at the County, ZIP Code, Census Tract, and Block Group Levels
| Comparisons by Geography and Measure | % Agreement | Kappa | PABAK |
|---|---|---|---|
| County-County | |||
| UI-RUCC | 100 | ||
| UI-NCHS | 100 | ||
| RUCC-NCHS | 100 | ||
| County-ZIP | |||
| County-FAR | 92.2 | 46.3 | 84.3 |
| County-zRUCA | 95.7 | 81.1 | 91.6 |
| County-Tract | |||
| County-tRUCA | 91.9 | 66.7 | 83.8 |
| County-Block Group | |||
| County-BG | 81.8 | 19.1 | 63.6 |
| ZIP-ZIP | |||
| FAR-zRUCA | 89.4 | 38.3 | 78.8 |
| ZIP-Tract | |||
| FAR-tRUCA | 86.9 | 31.7 | 73.8 |
| zRUCA-tRUCA | 93.0 | 73.1 | 85.9 |
| ZIP-Block Group | |||
| FAR-BG | 83.5 | 8.7 | 66.9 |
| zRUCA- BG | 80.5 | 23.3 | 61.0 |
| Tract-Block Group | |||
| tRUCA- BG | 78.2 | 19.0 | 56.4 |
| All 7 Definitions agree | 72.9 | 54.3 | - |
Note: all Kappa and PABAK values are p<.0001