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Table 4 Univariable logistic regression describing the disagreement by subgroups between the official underlying cause of death and the revised underlying cause of death for women diagnosed with breast cancer in Geneva between 1970 and 2009

From: Accuracy of cause of death data routinely recorded in a population-based cancer registry: impact on cause-specific survival and validation using the Geneva cancer registry

 

All data

  

Between 0 and 4 years of follow-up

  

Between 5 and 9 years of follow-up

  

Between 10 and 14 years of follow-up

 

N

%

OR

95% CI

N

%

OR

95% CI

N

%

OR

95% CI

N

%

OR

95% CI

Age (continuous)

5,065

100.0

1.03

[1.02;1.03]

2,497

100.0

1.02

[1.02;1.03]

1,275

100.0

1.02

[1.01;1.04]

626

100.0

1.03

[1.00;1.06]

Age at diagnosis

60-69

1,055

20.8

1

 

442

17.7

1

 

239

18.7

1

 

146

23.3

1

 

0-49

749

14.8

0.54

[0.37;0.81]

317

12.7

0.63

[0.37;1.07]

210

16.5

0.44

[0.17;1.15]

94

15.0

0.25

[0.71;0.88]

50-59

831

16.4

0.64

[0.45;0.92]

380

15.2

0.62

[0.37;1.03]

210

16.5

1.07

[0.50;2.27]

87

13.9

0.37

[0.12;1.12]

70-79

1,317

26.0

1.10

[0.83;1.46]

600

24.0

1.26

[0.85;1.86]

339

26.6

1.40

[0.73;2.67]

237

37.9

0.66

[0.33;1.32]

80+

1,113

22.0

1.54

[1.17;2.04]

758

30.1

1.48

[1.02;2.14]

277

21.7

1.48

[0.76;2.88]

62

9.9

1.12

[0.46;2.76]

Years (continuous)

   

0.99

[0.98;1.00]

  

0.99

[0.98;1.00]

  

0.97

[0.95;1.00]

  

0.94

[0.91;0.97]

Calendar period

70-79

1,576

31.1

1

 

695

27.8

1

 

354

27.8

1

 

198

31.6

N/A

80-89

1,552

30.6

1.00

[0.79;1.27]

686

27.5

1.31

[0.95;1.80]

387

30.5

0.84

[0.50;1.43]

206

32.9

90-99

1,302

25.7

0.69

[0.53;0.91]

654

26.2

0.80

[0.56;1.14]

366

28.7

0.63

[0.36;1.13]

217

34.7

00-09

635

12.5

0.81

[0.58;1.13]

462

18.5

0.82

[0.56;1.22]

168

13.2

0.52

[0.23;1.16]

5

0.8

Social Class

High

597

11.8

1

 

281

11.3

1

 

144

11.3

1

 

77

12.3

1

 

Medium

2,171

42.9

0.77

[0.56;1.06]

1,034

41.4

0.87

[0.56;1.33]

553

43.3

0.80

[0.38;1.66]

290

46.3

0.56

[0.24;1.28]

Low

1,484

29.3

1.04

[0.75;1.44]

735

29.4

1.24

[0.80;1.92]

363

28.5

1.30

[0.62;2.71]

177

28.3

0.55

[0.22;1.36]

Unknown

813

16.1

1.11

[0.78;1.59]

447

17.9

1.13

[0.70;1.81]

215

16.9

1.08

[0.47;2.45]

82

13.1

1.05

[0.40;2.74]

Stage

Stage I

1,014

20.0

1

 

280

11.2

1

 

305

23.9

1

 

198

31.6

1

 

Stage II

2,044

40.4

1.24

[0.93;1.66]

901

36.1

1.06

[0.68;1.64]

564

44.2

0.92

[0.53;1.61]

286

46.7

1.24

[0.61;2.52]

Stage III

807

15.9

1.48

[1.06;2.07]

538

21.6

1.03

[0.64;1.64]

175

13.7

1.36

[0.69;2.68]

58

9.3

1.95

[0.74;5.15]

Stage IV

490

9.7

1.25

[0.84;1.85]

427

17.1

0.87

[0.52;1.44]

50

3.9

0.28

[0.04;2.10]

8

1.3

4.74

[0.87;25.87]

Unknown

710

14.0

1.59

[1.13;2.23]

351

14.1

1.51

[0.93;2.44]

181

14.2

1.22

[0.61;2.44]

76

12.1

1.22

[0.45;3.33]

Treatment

Surgery only

1,252

24.7

1

 

436

17.5

1

 

323

25.3

1

 

216

34.5

1

 

Surg + adj.

2,693

53.2

0.78

[0.61;1.01]

1,186

47.5

0.58

[0.40;0.84]

766

60.1

0.85

[0.51;1.41]

367

58.6

0.99

[0.52;1.89]

No treatment

421

8.3

2.50

[1.82;3.43]

317

12.7

1.84

[1.23;2.75]

69

5.4

1.41

[0.58;3.41]

23

3.7

4.41

[1.53;12.75]

Hormones

448

8.9

1.76

[1.26;2.46]

345

13.8

1.34

[0.88;2.03]

88

6.9

1.25

[0.54;2.88]

14

2.2

0.96

[0.12;7.83]

Others

251

5.0

1.34

[0.86;2.10]

213

8.5

1.00

[0.60;1.67]

29

2.3

0.44

[0.06;3.41]

6

1.0

2.50

[0.28;22.71]

Period of death

continuous

  

0.97

[0.96;0.98]

  

0.98

[0.97;1.00]

  

0.98

[0.96;1.00]

  

0.94

[0.90;0.97]

70-79

630

12.4

1

 

548

21.9

1

 

82

6.4

1

   

N/A

80-89

1,196

23.6

1.01

[0.75;1.36]

658

26.4

1.18

[0.84;1.66]

362

28.4

0.60

[0.28;1.30]

149

23.8

90-99

1,483

29.3

0.69

[0.51;0.93]

694

27.8

0.86

[0.6;1.23]

377

29.6

0.51

[0.24;1.11]

211

33.7

00-10

1,756

34.7

0.45

[0.33;0.61]

597

23.9

0.65

[0.44;0.96]

454

35.6

0.44

[0.20;0.95]

266

42.5

Age at death

continuous

  

1.02

[1.01;1.02]

  

1.02

[1.01;1.03]

  

1.02

[1.01;1.04]

  

1.03

[1.00;1.05]

60-69

813

16.1

1

 

427

17.1

1

 

222

17.4

1

 

87

13.9

1

 

0-49

353

7.0

0.65

[0.39;1.08]

248

9.9

0.66

[0.37;1.18]

94

7.4

0.30

[0.67;1.34]

8

1.3

2.34

[0.24;22.94]

50-59

593

11.7

0.49

[0.31;0.79]

350

14.0

0.51

[0.29;0.90]

160

12.6

0.54

[0.20;1.42]

64

10.2

0.26

[0.30;2.28]

70-79

1,105

21.8

1.13

[0.82;1.56]

580

23.2

1.25

[0.83;1.86]

270

21.2

1.10

[0.55;2.21]

130

20.8

1.22

[0.39;3.77]

80+

2,201

43.5

1.23

[0.93;1.63]

892

35.7

1.46

[1.01;2.10]

529

41.5

1.31

[0.72;2.41]

337

53.8

1.90

[0.72;5.01]

Place of death

Public hospital

2,845

56.2

1

 

1,573

63.0

1

 

677

53.1

1

 

315

50.3

N/A

Retirement home

1,291

25.5

0.74

[0.58;0.93]

570

22.8

0.87

[0.64;1.17]

328

25.7

0.71

[0.41;1.22]

172

27.5

Private hospital

150

3.0

0.59

[0.31;1.14]

55

2.2

0.54

[0.19;1.51]

47

3.7

1.37

[0.52;3.62]

24

3.8

Home

374

7.4

0.37

[0.22;0.62]

143

5.7

0.20

[0.07;0.54]

113

8.9

0.76

[0.34;1.72]

54

8.3

Others

263

5.2

0.13

[0.05;0.35]

122

4.9

0.11

[0.03;0.47]

70

5.5

0.17

[0.02;1.23]

38

6.1

Missing

142

2.8

0.30

[0.12;0.75]

34

1.4

0.21

[0.03;1.53]

40

3.1

0.94

[0.28;3.13]

25

4.0

 

Sector of care

Private

2,028

40.0

1

 

870

34.8

1

 

550

43.1

1

 

286

45.7

1

 

Public

3,037

60.0

1.47

[1.20;1.81]

1,627

65.2

1.61

[1.21;2.14]

725

56.9

1.02

[0.66;1.58]

340

54.3

1.60

[0.88;2.91]