Exercise:
The purpose of the study is to investigate the association between colon cancer prognosis, and surgical and histopathological findings. Perform logistic regression analysis. The objective variables (dependent variable) are defined as colon cancer prognosis, ‘survival = 1, death = 0’. Explanatory variables (independent variable) are defined as ‘cancer invasion depth (1 to 5 grades), serous membrane invasion = 0 or 1, peritoneal invasion = 0 or 1, hepatic metastasis = 0 or 1, and lymph duct invasion = 0 or 1’