Superiority of metastatic lymph node ratio to the 7th edition UICC N staging in gastric cancer

Figure 1 Impact of 6th and 7th International Union Against Cancer N staging systems (A and B) and metastatic lymph node ratio staging (C) on overall survival of gastric cancer patients who underwent radical resection. A: The 6th International Union Against Cancer (UICC) N staging: N0 vs N1, P < 0.001; N1 vs N2, P < 0.001; N2 vs N3, P = 0.143; B: The 7th UICC N staging: N0 vs N1, P < 0.001; N1 vs N2, P = 0.003; N2 vs N3, P = 0.001; C: Metastatic lymph node ratio (MLNR) staging: MLNR0 vs MLNR1, P < 0.001; MLNR1 vs MLNR2, P < 0.001; MLNR2 vs MLNR3, P < 0.001.