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Table 3 Case characteristics and adjusted 5-year survival rates for areas with shorter or longer than expected survival as defined by the spatial scan statistic.

From: Geographic disparities in colorectal cancer survival

Survival time adjusted for: Study Areaa Total Cases Obs deaths O/E deaths P-value AVG % CT Povertyb % NHW % NHB % H % A Adjusted 5-year survivalb (95% CI) inside survival aread Adjusted 5-year survivalc (95% CI) outside survival aread
a. Age, sex, stage             
  A 1,252 188 0.72 0.040 3.4 91.1 2.2 3.8 2.9 84.2 (82.1, 86.3) 78.9 (78.4, 79.5)
  B 486 61 0.54 0.010 3.2 91.6 3.3 1.9 3.3 88.3 (85.4, 91.3) 79.1 (78.5, 79.5)
  C 1,713 271 0.75 0.047 5.9 82.6 5.3 6.8 5.4 83.6 (81.8, 85.5) 78.9 (78.3, 79.5)
  D 954 133 0.67 0.043 4.4 80.7 8.2 6.2 4.9 85.6 (83.2, 88.0) 79.0 (78.4, 79.5)
  E 10,113 2,124 1.10 0.008 9.3 73.6 14.4 9.8 2.3 77.5 (76.7, 78.3) 80.4 (79.7, 81.1)
  F 5,804 1,324 1.24 <0.001 12.2 65.5 19.5 12.9 2.1 75.2 (74.0, 76.3) 80.4 (79.8, 81.0)
  G 2,771 666 1.40 <0.001 17.8 50.1 27.7 19.8 2.4 73.1 (71.5, 74.9) 80.0 (79.4, 80.5)
  A 1,252 188 0.74 0.424       83.7 (81.5, 85.9) 78.9 (78.4, 79.5)
  B 486 61 0.56 0.048       87.9 (84.9, 90.9) 79.0 (78.5, 79.5)
  C 1,713 271 0.76 0.164       83.3 (81.5, 85.2) 78.9 (78.3, 79.4)
  D 954 133 0.68 0.093       85.4(83.1, 87.8) 78.9 (78.4, 79.5)
  E 10,113 2124 1.07 0.809       77.9 (76.9, 78.6) 80.1 (79.5, 80.8)
  F 5,804 1324 1.17 <0.001       76.0(74.5, 76.9) 80.2 (79.6, 80.8)
  G 2,771 666 1.25 0.002       74.5 (72.4, 76.0) 79.8 (79.2, 80.3)
  H 5,772 1,315 1.18 <0.001 12.2 65.5 19.5 12.9 2.1 75.7 (74.6, 76.9) 80.4 (79.8, 81.0)
  I 4,621 1,072 1.20 <0.001 12.9 63.6 21.3 12.9 2.2 75.4 (74.1, 76.7) 80.2 (79.7, 80.8)
  J 386 125 1.63 0.037 16.3 57.5 23.3 18.1 1.0 71.4 (67.1, 75.7) 79.3 (78.9, 80.0)
  A 1,252 188 0.78 0.987       83.0 (80.8, 85.3) 79.0 (78.4, 79.5)
  B 486 61.0 0.60 0.398       87.3 (84.2, 90.5) 79.0 (78.5, 79.5)
  C 1,713 271 0.78 0.495       83.1 (81.3, 85.0) 78.9 (78.3, 79.4)
  D 954 133 0.72 0.701       84.8 (82.3, 87.3) 78.9 (78.4, 79.5)
  E 10,113 2124 1.06 0.987       77.9 (77.1, 78.8) 80.0 (79.3, 80.7)
  F 5,804 1324 1.12 0.132       76.3 (75.2, 77.5) 80.0 (79.5, 80.6)
  G 2,771 666 1.13 0.987       75.7 (73.9, 77.5) 79.6 (79.1, 80.2)
  H 5,772 1315 1.13 0.107       76.3 (75.0, 77.4) 80.0 (79.4, 80.6)
  I 4,621 1072 1.14 0.146       76.2 (74.8, 77.4) 79.9 (79.3, 80.5)
  J 386 125 1.54 0.344       72.6 (68.3, 76.8) 79.3 (78.7, 79.8)
  K 5,404 1,224 1.15 0.017 11.3 67.2 20.7 9.9 2.2 76.2 (75.0, 77.4) 80.3 (79.7, 81.0)
  L 1,316 327 1.32 0.048 8.1 78.9 11.1 9.0 1.1 74.6 (72.2, 76.9) 79.5 (79.0, 80.0)
  1. Geographic locations illustrated in figure 1.
  2. a Short or long survival areas detected by the spatial scan statistic are illustrated in Figure 1.
  3. b Averages for each area are based on the census tract values assigned to the cases.
  4. c Directly adjusted 5 year colorectal cancer specific survival rates are based on a Cox regression model adjusted for specified covariates. The method adjusts survival time by covariates to adjust for any imbalance of CRC case characteristics inside and outside defined survival area (e.g All CRC cases inside area A versus all CRC cases outside area A).
  5. d Inside refers to the adjusted survival time of all CRC cases inside the specified survival area (e.g Cases inside detected area A). Outside refers to the adjusted survival time of all CRC cases outside the specified survival area (e.g. Cases outside detected area A).
  6. P-value from spatial scan statistic Monte Carlo permutation test.