Skip to main content

Table 2 Agreement in accuracy level (Cohen’s Kappa coefficient) for methods A and B (automatic geocoding) in comparison with method R (manual reference method)

From: Accuracy of two geocoding methods for geographic information system-based exposure assessment in epidemiological studies

 

Method R

Method A

Method B

City

(N addresses)

Street segment

(N addresses)

Address

(N addresses)

Total

(N addresses)

Cohen's kappa coefficient

Postal code

(N addresses)

Street segment (N addresses)

Address

(N addresses)

Total

(N addresses)

Cohen's kappa coefficient

Overall

Town Hall

147

20

14

181

0.60

133

49

5

187

0.61

Street segment

212

309

140

661

119

439

131

689

Address

46

34

1294

1374

125

70

1354

1549

Total

405

363

1448

2216

 

377

558

1490

2425

 

For urban addressesa

Town Hall

62

10

11

83

0.56

54

27

5

86

0.52

Street segment

94

166

130

390

64

226

126

416

Address

44

26

1265

1335

114

63

1331

1508

Total

200

202

1406

1808

 

232

316

1462

2010

 

For rural addressesa

Town Hall

85

10

3

98

0.39

79

22

0

101

0.54

Street segment

118

143

10

271

55

213

5

273

Address

2

8

29

39

11

7

23

41

Total

205

161

42

408

 

145

242

28

415

 

For 1990–2000 period addresses

Town Hall

133

17

13

163

0.61

125

45

5

175

0.60

Street segment

182

278

120

580

112

396

117

625

Address

45

29

1141

1215

121

67

1216

1404

Total

360

324

1274

1958

 

358

508

1338

2204

 

For 2000–2008 period addresses

Town Hall

14

3

1

18

0.56

8

4

0

12

0.70

Street segment

30

31

20

81

7

43

14

64

Address

1

5

153

159

4

3

138

145

Total

45

39

174

258

 

19

50

152

221

 
  1. aAssignment of urban and rural status of addresses was based on definitions established by the French national institute for statistics and economic studies (INSEE)