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Table 3 C-indexes for the nomogram and the AJCC 8th staging system in GC patients

From: A novel nomogram based on cardia invasion and chemotherapy to predict postoperative overall survival of gastric cancer patients

OS Training set Validation set
C-index (95% CI) P-value C-index (95% CI) P-value
Nomogram 0.736 (0.726–0.746)   0.748 (0.726–0.770)  
8th AJCC stage 0.699 (0.689–0.709) < 0.001 0.707 (0.684–0.730) < 0.001
  1. AJCC American Joint Committee on Cancer, GC gastric cancer, OS overall survival, CI confidence interval