Table 2 Results of Geocoding with Uncertainty Capture by CEL: NC CCR data for all cases of cancer reported January 1–31, 2022

Geocoding using probabilistic and deterministic algorithms

 ED Address Point

4994

(86.0)

4916

(84.9)

N/A

78

(1.3)

1,023

(13 CEL/case)

100%

0

0

 Parcel Centroid

253

(4.4)

180

(1)

70

(3.0)

3

(0.0)

6

(2 CEL/case)

4%

96%

0

 Digital Street Centerline

80

(1.4)

3

(0.04)

16

(0.2)

61

(0.76)

4714

(77 CEL/case)

35%

20%

45%

Interactive geocoding

 ED address point

389

(6.7)

378

(6.5)

N/A

11

(0.2)

101

(9 CEL/case)

100%

0

0

 Parcel centroid

23

(0.4)

4

(< 0.1)

19

(0.3)

0

(0.0)

N/A

17%

83%

0

 Digital street centerline

19

(0.1)

1

(< 0.1)

6

12

(< 0.1)

492

(41 CEL/case)

24%

32%

44%

 Manually placed

2

(0.2)

0

2

0

(0)

N/A

0%

100%

0

 Postal code area centroid

31

(0.3)

0

0

31

(0.3)

456,847

(24,045 CEL/case)

8%^e

0%

92%

 Post office box location^c

5

(0.1)

0

N/A

5

(0.1)

24,699,660

(4,939,932 CEL/case)

6%^e

0%

94%

 County centroid^d

9

0

0

9

781,683

(86,851/case)

1.5%^e

0%

98.5%

 State centroid^d

0

0

0

0

0

N/A

N/A

N/A

 Not Geocoded

2

(< 0.1)

N/A

N/A

N/A

N/A

N/A

N/A

N/A