Table 1

Area of clusters by method

Methods
Filtering Sizes or Maximum Spatial Cluster Sizes (miles)
Significance
Total Area of Shelby County (sq. meter)
Clustered Area (sq. meter)
% of Total Shelby County

Spatial filtering
0.40
≥ 0.95 level

6,676,687
0.32%

0.50
≥ 0.95 level

27,191,960
1.32%

0.60
≥ 0.95 level

119,492,954
5.80%



SaTScan
0.40
P1 (most likely) = 0.002

935,139
0.05%


P2 (secondary) < 0.05
2,061,075,094
1,523,635
0.07%

0.50
P1 (most likely) = 0.001

1,500,352
0.07%


P2 (secondary) < 0.05

2,828,068
0.14%

0.60
P1 (most likely) = 0.001

2,344,277
0.11%


P2 (secondary) < 0.05

5,145,388
0.25%

Ozdenerol et al. International Journal of Health Geographics 2005 4:19   doi:10.1186/1476-072X-4-19