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. 2022 Jul 29;30(3):395–403. doi: 10.5606/tgkdc.dergisi.2022.20089

Table 4. Survival comparisons between 6th, 7th, and 8th TNM staging systems for each same stage.

  6th TNM system 7th TNM system 8th TNM system 6th TNM vs. 7th TNM 7th TNM vs. 8th TNM
5-year survival 5-year survival 5-year survival Hazard ratio Hazard ratio
% % % p 95% CI p 95% CI
Stage 1A 70.9 70.9 70.9 1.000 - 1.000 -
Stage 1B 63.1 63.3* 66.4‡ 0.939 0.989 (0.760-1.288) 0.776 0.951 (0.673-1.343)
Stage 2A 61.3 56.4 61.3‡ 0.303 1.242 (0.843-1.828) 0.274 0.816 (0.577-1.153)
Stage 2B 49.5 51.9* 54.7‡ 0.255 0.877 (0.697-1.098) 0.842 1.026 (0.812-1.298)
Stage 3A 36.8 42.5* 48.0‡ 0.287 0.887 (0.710-1.109) 0.03 0.815 (0.673-0.987)
Stage 3B 47.3 20.0 33.7‡ 0.02 2.682 (0.652-11.037) 0.218 0.531 (0.137-2.054)
Stage 4 31.2 20.0 20.0 0.877 0.918 (0.306-2.747) 1.000 -
TNM: Tumor, node, metastasis; CI: Confidence interval; * The 7th TNM staging system showed better survival rate than the 6th TNM staging system in same stage in both staging systems; ‡ The 8th TNM staging system showed better survival rate than the 7th TNM staging system in each same stage in both staging systems; HR >1 for all comparisons of each stage.