title: The impact of calculation procedure on the hazard ratio of N classifications.
authors.forename: Cunjun
authors.initials: C
authors.lastname: Yu
authors.forename: Zhu
authors.initials: Z
authors.lastname: Ying
authors.forename: Wenping
authors.initials: W
authors.lastname: Chen
mesh_terms: D000704:Analysis of Variance; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D011237:Predictive Value of Tests; D011379:Prognosis; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000473:pathology*