Table I.
SaTScan cluster analysis results
| Cluster number | Location | Radius (km) | Cases per 100,000 | Relative risk | P value |
|---|---|---|---|---|---|
| Not controlling for race | |||||
| 1 | Cape May County, NJ | 410.40 | 50.6 | 1.68 | <.0001 |
| 2 | West Princess Anne, MD | 181.38 | 69.4 | 2.22 | <.0001 |
| 3 | Waterford Township, PA | 173.50 | 54.4 | 1.76 | <.0001 |
| 4 | Huron Township. OH | 255.84 | 47.3 | 1.54 | <.0001 |
| 5 | Dothan, AL | 450.35 | 46.5 | 1.52 | <.0001 |
| 6 | Tuscaloosa County, AL | 306.78 | 57.1 | 1.82 | <.0001 |
| 7 | Bloomingdale, GA | 277.49 | 51.9 | 1.66 | <.0001 |
| 8 | Queensbury, NY | 299.32 | 47.7 | 1.53 | <.0001 |
| 9 | Jackson, MI | 124.46 | 57.7 | 1.82 | <.0001 |
| 10 | Forsyth County, NC | 167.86 | 42.6 | 1.34 | <.0001 |
| 11 | Fort Thomas, KY | 168.87 | 37.7 | 1.19 | <.0001 |
| 12 | Little Rock, AR | 350.61 | 39.8 | 1.24 | .0005 |
| 13 | Lexington, KY | 110.94 | 38.7 | 1.21 | .0006 |
| 14 | Sumter County, FL | 0 | 13 | 3.51 | .142 |
| 15 | Highlands County, FL | 75.89 | 109 | 1.40 | .439 |
| 16 | Shreveport, LA | 246.98 | 237 | 1.22 | .772 |
| 17 | Scipio Township, IN | 56.25 | 98 | 1.32 | .976 |
| Controlling for race | |||||
| 1 | Natrona County, WY | 0 | 3 | 1.00 | 1.00 |
Clusters were identified using the number of cases per core-based statistical area (CBSA) with the total CBSA population and using a latitude and longitude coordinate system. The cluster analysis was run using a discrete Poisson probability model, with 10% of the population at risk set as the maximum spatial cluster size.