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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