The results of univariate analysis showed that there were significant differences between patients with adverse clinical outcomes and patients with good clinical outcomes in NLR, BMI, tumor size, lymph node metastasis, CEA, age and other indicators (P < 0.05), and there was no co-linearity among the covariates (the tolerance of each variable in the regression model > 0.1, VIF < 10, and condition index < 30, and the proportion of variances of multiple covariates without the same feature value > 50%) (Table 2). This evidence concerns the gene CEACAM5 and neoplasm.