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Table 6 Cost comparison Expected number of undetected regions included in the true cluster E(s* - S), expected number of detected regions not in the true cluster E(L - S) and the ratio of costs C/C2 (r = 1, 2) incurred by incomplete identification of the true cluster. The spatial scan statistic with low values is better.

From: A flexibly shaped spatial scan statistic for detecting clusters

Hot-spot Cluster Scan statistic E(s* - S) E(L - S) the ratio C/C2
     r = 1 r = 2
A = {14, 15, 20} Flexible (K = 15) 0.108 2.951 3.059 3.167
  Circular (K = 15) 0.065 0.722 0.787 0.852
B = {14, 15, 20, 26} Flexible (K = 15) 0.097 2.548 2.645 2.742
  Circular (K = 15) 0.735 2.525 3.260 3.995
C = {14, 15, 26, 27} Flexible (K = 15) 0.492 2.243 2.735 3.227
  Circular (K = 15) 1.736 3.153 4.889 6.625
D = {73, 74, 75, 76, 78} Flexible (K = 15) 1.774 1.088 2.862 4.636
  Circular (K = 15) 2.770 1.709 4.479 7.249