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Table 2 Geographic variation of prostate cancer incidence using the default (50%) scanning window according to selected study areas across Southern New England, USA, 1994–1998.

From: Effects of study area size on geographic characterizations of health events: Prostate cancer incidence in Southern New England, USA, 1994–1998

Study Area Location* Population at-risk Size (sq km) Cases O/E** p-value
CT, MA & RI 1 1,779,267 28,174.1 16,055 0.91 0.0001
  2 200,603 13,809.5 2,729 1.27 0.0001
  3 115,636 973.1 1,626 1.33 0.0001
  4 31,229 36.1 127 0.49 0.0001
  5 63,951 382.9 830 1.26 0.0001
Massachusetts (MA) 6 408,741 37,868.3 3,465 0.81 0.0001
  7 200,603 13,809.5 2,729 1.26 0.0001
  8 518,190 2,102.5 5,076 1.15 0.0001
  9 29,381 497.2 114 0.45 0.0001
  10 31,229 36.1 127 0.48 0.0001
  11 177,096 865.7 2,194 1.20 0.0001
Connecticut (CT) 12 140,890 1,313.8 1,897 1.28 0.0001
  13 353,654 2,249.7 3,144 0.86 0.0001
  14 64,714 3,261.4 433 0.69 0.0001
  15 116,216 713.5 1,293 1.22 0.0001
Rhode Island (RI) 16 66,477 1,794.5 721 1.39 0.0001
  17 168,340 1,699.7 1,366 0.87 0.0001
  1. * Illustrated in Figure 1. ** Risk of prostate cancer for residents of a given location, relative to the risk elsewhere around the designated study area.