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Table 4 Concordance indices of the current three-strata risk group model (NICE) and Cambridge Prognostic Group (CPG) from competing risk analysis in predicting prostate cancer-specific mortality (p < 0.001 for both comparisons)

From: The Cambridge Prognostic Groups for improved prediction of disease mortality at diagnosis in primary non-metastatic prostate cancer: a validation study

  Concordance index (confidence interval)
Cohort (n) NICE CPG
PCBaSe (72,337) 0.77 (0.76–0.77) 0.81 (0.81–0.82)
Singapore (2550) 0.76 (0.73–0.80) 0.79 (0.76–0.83)