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. 2011 Mar 30;10:22. doi: 10.1186/1476-072X-10-22

Table 1.

Statistical Analysis of Spatial Extent of 911 Alarms (n = 86)

Alarm Area (km2) Number of Calls Density (calls/km2)
Average 9.22 9 28.54

Minimum < 0.00031 3 0.08

Maximum 253.21 34 995.22

1 The minimum alarm area was less than SaTScan's™ minimum distance threshold (minimum radius = 0.01 km) which translates to a minimum alarm area of 0.0003 km2.