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. 2016 May 30;7(32):51069–51081. doi: 10.18632/oncotarget.9714

Figure 4. Stratified comparative survival analysis on discriminatory ability and accuracy according to the different number of retrieved lymph nodes.

Figure 4

(A, B): survival curves of patients with retrieved lymph node ≥ 15 in terms of subgroups of N and Nr stage. (C, D): survival curves of patients with retrieved lymph node < 15 in terms of subgroups of N and Nr stage. The significance of difference between survival curves was calculated by the log-rank test.