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. 2014 Dec 23;9(12):e116261. doi: 10.1371/journal.pone.0116261

Figure 3. Survival analyses of N categories using the TNM 6th and the TNM 7th editions staging systems.

Figure 3

Panels A, B, and C were staged according to the TNM 6th edition staging system, while panels A′, B′, and C′ were followed according to the TNM 7th edition. There were significant differences among each stage of N categories except for N1 vs. N2 in either OS or DMFS (Panels 3A and 3C) in the TNM 6th edition, while such differences became significant in the TNM 7th edition (Panels 3A′ and 3C′). However, neither the TNM 6th nor TNM 7th edition could distinguish the LRFFS between N1 and N2 (Panels 3B and 3B′).