Skip to main content

Table 2 Spatial scan statistic clusters. Approximate locations with elevated invasive and late-stage prostate or breast cancer incidence according to selected areal units of analysis, Connecticut, 1988–92.

From: Lumping or splitting: seeking the preferred areal unit for health geography studies

 

Geocoded Records

Coordinates (Lat.; Long.)

Area (km2)

Population at-risk

Cases in Cluster

0/E

Distance (km)

p-value

Prostate Cancer Incidence

       

Block Group

9,028

       

1

 

41.834; -72.727

1,504

254,092

2,651

1.28

Ref.

<0.0001

2

 

41.311; -72.878

0

345

19

7.62

 

<0.0001

3

 

41.472; -73.225

0

148

12

6.97

 

0.0060

4

 

41.497; -73.218

0

97

13

5.32

 

0.0316

Tract

9,825

       

1

 

41.823; -72.735

1,297

238,007

2,673

1.26

1.4

<0.0001

2

 

41.463; -72.153

0

1,461

33

3.35

 

<0.0001

Town

10,054

       

1

 

41.995; -72.454

6,104

286,450

2,947

1.22

11.1

<0.0001

Breast Cancer Incidence

       

Block Group

        

1

11,753

41.182; -73.510

573

85,084

952

1.22

Ref.

11,753

2

 

41.797; -72.775

115

27,066

391

1.31

 

0.0048

Tract

10,924

       

1

 

41.137; -73.391

854

147,066

1,554

1.21

11.2

<0.0001

2

 

41.787; -72.660

0

15

6

162.03

 

<0.0001

3

 

41.707; -72.647

87

32,358

401

1.26

 

0.0228

4

 

41.795; -72.756

64

20,737

284

1.31

 

0.0305

5

 

41.894; -72.368

0

2,137

34

2.34

 

0.0445

Town

12,518

       

1

 

41.960; -73.311

85

402

24

5.85

88.2

<0.0001

2

 

41.122; -73.346

584

87,795

1,009

1.14

 

0.0160

Late Stage Prostate Cancer Incidence

      

Place of Residence

7,672

       

1

 

41.486; -73.065

2,057

1,651

549

1.19

2.0

0.0070

2

 

41.061; -73.458

65

72

41

2.04

 

0.0135

Block Group

7,672

       

1

 

41.501; -73.078

2,218

1,696

563

1.19

Ref.

0.0029

2

 

41.054; -73.478

44

61

35

2.05

 

0.0246

Tract

8,346

       

1

 

41.480; -73.075

1,895

1,596

541

1.22

2.4

<0.0001

Town

8,514

       

1

 

41.489; -73.052

1,959

1,932

644

1.19

2.5

<0.0001

Late Stage Breast Cancer Incidence

      

Place of Residence

10,227

No significant clusters detected

      

Block Group

10,227

41.666; -72.776

center16

105

center68

1.61

Ref.

0.0092

1

        

Tract

10,395

No significant clusters detected

      

Town

11,854

No significant clusters detected

     Â