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. 2017 Jul 21;12:122. doi: 10.1186/s13014-017-0848-2

Fig. 1.

Fig. 1

Overall survival curves according to T category, stage group, and N category in 7-TNM and 8-TNM. Curves of the T category by 7-TNM a, T category by 8-TNM b, stage group by 7-TNM c, stage group by 8-TNM d, and N category e. 7-TNM, seventh American Joint Committee on Cancer TNM staging system; 8-TNM, eighth American Joint Committee on Cancer TNM staging system