Evaluation of the Eighth Edition of the American Joint Committee on Cancer TNM Staging System for Gastric Cancer: An Analysis of 7371 Patients in the SEER Database
Table 3
Comparison of the performance of various editions of the TNM staging system.
Model
Concordance index
ROC curve
AIC
C-index
95% CI
AUC
95% CI
TNM stage (AJCC 7th)
0.725
0.717-0.740
0.770
0.759-0.781
56,463.140
TNM stage (AJCC 8th)
0.734
0.720-0.741
0.773
0.762-0.783
56,396.524
Stage III (AJCC 7th)
0.594
0.581-0.607
0.607
0.587-0.626
31,552.480
Stage III (AJCC 8th)
0.608
0.599-0.624
0.621
0.602-0.640
31,515.240
Revised TNM system
0.741
0.730-0.748
0.774
0.763-0.784
56,355.250
ROC curve: receiver operating characteristic curve; AUC: area under curve; 95% CI: 95% confidence interval; AIC: Akaike information criterion.