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Table 2 Concordance rates of imputed with observed T- and UICC-stages for breast cancer and malignant melanoma

From: Imputation of missing values of tumour stage in population-based cancer registration

 

Breast cancer

Malignant melanoma

 

PR (in %)

PMM (in %)

RF (in %)

Prop (in %)

PR (in %)

PMM (in %)

RF (in %)

Prop (in %)

T-stage

        

Concordance

48.7

48.0

31.4

39.4

47.7

47.2

40.6

42.5

Dislocation by 1 stage

37.8

38.4

55.4

41.5

32.0

32.3

30.8

31.0

Dislocation by 2 stages

10.1

10.3

8.2

11.4

15.4

15.5

19.9

18.1

Dislocation by 3 stages

3.4

3.4

5.0

7.7

4.9

5.0

8.7

8.4

UICC-stage

        

Concordance

79.5

79.1

58.8

74.2

80.6

80.8

77.9

79.5

Dislocation by 1 stage

17.3

17.6

25.0

19.9

11.1

10.8

13.3

11.5

Dislocation by 2 stages

2.9

2.9

14.2

4.8

6.2

5.7

8.1

7.4

Dislocation by 3 stages

0.3

0.3

1.9

1.1

2.1

2.7

0.6

1.6

  1. PR Polytomous regression
  2. PMM Predictive mean matching
  3. RF Random forests
  4. Prop Proportional sampling