MKI67 and neoplasm: Using pathological evaluation as the gold standard, candidate variables were screened through univariate analysis in the training set; the selected variables were then incorporated into multivariate logistic regression analysis of the training set to determine the final independent predictors Ki-67 proliferation index and tumor morphological characteristics to construct the model; the established model was directly applied to the test set to calculate prediction probabilities and evaluate performance (Table 2).