Patient baseline characteristics
Overall, 5698 UTUC patients were identified from the SEER database, of which 1257 UTUC patients received chemotherapy. 2 patients whose survival time was 0 and 60 patients who underwent Multivisceral resection were excluded. 1195 patients were further assigned to training and validation sets in a 7:3 ratio. Figure Flowchart of screening process Demographics, clinicopathologic characteristics, and therapeutic information of the enrolled UTUC patients*Demographics, clinicopathologic characteristics, and therapeutic information of the training set and validation set*