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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.
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International Journal of Health Geographics

ISSN: 1476-072X