slightly significantp = 0.05
After AIC selection of variables, multivariate analysis with an odds ratio (95% CI) showed that MVI (22.29 [4.04, 122.92]), the presence of micropapillary/solid subtype (5.09 [1.80, 14.40]), and CTR >0.61(12.49 [2.63, 59.40]) were independently associated with lymph node metastasis ( p < 0.01), while the age was slightly significant ( p = 0.05).