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Table 3 Geographic variation of prostate cancer incidence using of a restrictive (10%) 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 18 340,925 3,306.1 2763 0.79 0.0001
  19 200,603 13,809.5 2729 1.27 0.0001
  20 239,448 17,572.6 1917 0.77 0.0001
  21 115,636 973.1 1626 1.33 0.0001
  22 376,304 1,935.3 3925 1.16 0.0001
  23 5,741 5.3 0 0.00 0.0001
  24 31,229 36.1 127 0.49 0.0001
  25 177,096 865.7 2194 1.21 0.0001
  26 117,550 1,179.9 966 0.77 0.0001
  27 6,027 0.4 0 0.00 0.0001
  28 116,216 713.5 1293 1.24 0.0001
  29 20,338 12.8 220 1.66 0.0001
  30 91,701 1,626.0 774 0.82 0.0003
  31 17,970 86.9 211 1.50 0.0010
  32 28,139 42.5 228 0.71 0.0016
  33 32,013 779.3 225 0.73 0.0118
  34 19,704 28.8 159 0.69 0.0220
  35 3,526 1.3 42 2.33 0.0479
Massachusetts (MA) 36 164,636 13,224.3 1325 0.73 0.0001
  37 185,321 13,167.3 2546 1.27 0.0001
  38 29,381 497.2 114 0.45 0.0001
  39 5,741 5.3 0 0.00 0.0001
  40 31,229 36.1 127 0.48 0.0001
  41 177,096 865.7 2194 1.20 0.0001
  42 6,027 0.4 0 0.00 0.0001
  43 204,367 1,542.7 2174 1.19 0.0001
  44 144,083 3,295.9 1193 0.82 0.0001
  45 39,483 169.3 546 1.37 0.0001
  46 20,338 12.8 220 1.64 0.0001
  47 14,521 7.9 126 1.70 0.0010
  48 19,704 28.8 159 0.69 0.0098
Connecticut (CT) 49 105,999 920.8 1487 1.32 0.0001
  50 105,495 1,488.9 860 0.75 0.0001
  51 64,714 3,261.4 433 0.69 0.0001
  52 116,216 713.5 1293 1.22 0.0001
  53 28,139 42.5 228 0.69 0.0002
Rhode Island (RI) 54 36,996 912.2 424 1.51 0.0001
  55 31,645 31.8 215 0.71 0.0002
  56 28,593 28.3 198 0.75 0.0245
  1. * Illustrated in Figure 2. ** Risk of prostate cancer for residents of a given location, relative to the risk elsewhere around the designated study area.