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Table 3 Comparison of the predictive performance of 2 staging systems for disease specific survival of testing set

From: A modified TNM staging system for non-metastatic colorectal cancer based on nomogram analysis of SEER database

Disease specific survival Characteristics 7th TNM staging Nomo-staging
1-year c-index 6.6244 e−1 7.0510 e−1
  AIC 10,819.46 10,621.42
  L.R. 5.4271 e2 7.4074 e2
2-year c-index 6.6396 e−1 7.0079 e−1
  AIC 18,959.71 18,699.34
  L.R. 1.0801 e3 1.3344 e3
3-year c-index 6.4770 e−1 6.8123 e−1
  AIC 24,244.46 24,015.26
  L.R. 1.2132 e3 1.4364 e3
  1. Abbreviation: AIC Akaike information criteria; L.R Likelihood ratio