Evaluation of three lymph node staging systems for prognostic prediction in gastric cancer: A systematic review and meta-analysis

Figure 4 Overall survival according to the different staging methods. A: Positive lymph node ratio; B: Log odds of positive lymph nodes; C: Pathological lymph nodes; D: Relative survival difference rates among staging methods (lymph node ratio, log odds of positive lymph nodes, and pathological lymph nodes). Relative survival difference rates _{(LNR 0:1)} = [(OS_(LNR0) - OS_(LNR1))/OS_(LNR0)]. OS: Overall survival; LNR: Lymph node ratio; LODDS: Log odds of positive lymph nodes; pN: Pathological lymph nodes.