Variables definition
squamous cell carcinoma, spindle cell carcinoma, tumor, death, cancer, adenosquamous carcinoma, adenocarcinoma, metaplastic carcinoma
CANCER, TUMOR, ADENOCARCINOMA
The clinicopathological information of patients, including age, race, marriage, histological type, histological grade, TNM stage, ER, PR and HER2 status, tumor size, and treatment (surgery, radiotherapy and chemotherapy), were obtained from the SEER database. The race is divided into white, black and others (American Indian/AK Native, Asian/Pacific Islander). Marriage is divided into married or unmarried. Histological types included metaplastic carcinoma, squamous cell carcinoma, spindle cell carcinoma, adenosquamous carcinoma and adenocarcinoma mixed. Histological grades, including grades I-IV, were highly differentiated, moderately differentiated, poorly differentiated and undifferentiated, respectively. Surgery is divided into surgery and non-surgery. Radiotherapy and chemotherapy are also divided into yes or No. ER, PR and HER2 status were classified as negative or positive. Patients’ survival status is divided into survival, death from cancer, or death from other causes.Among these variables, age and tumor size are treated as continuous variable inputs to the model, while marital status, tumor laterality, pathological type, histological grade, TNM stage, surgery, radiation therapy, chemotherapy, ER status, PR status, and HER2 status are treated as categorical variable inputs to the model.