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. 2019 Jul 22;19:721. doi: 10.1186/s12885-019-5940-6

Table 4.

Comparison of different prognostic models on 357 ESCC patients

Concordance Indices AIC Likelihood Ratio X2
C-index Bootstrap 95% CI
Model 1 0.715 0.672–0.759 1999.66 93.013
Model 2 0.718 0.675–0.762 1999.53 95.146