Data collection
death, pancreatic cancer
PANCREATIC CANCER
In our study, patients diagnosed with pancreatic cancer from 2000 to 2019 were collected from the SEER database. The exclusion criteria were as follows: diagnosed confirmation with clinical diagnosis only, radiography without microscopic confirm, direct visualization without microscopic confirmation or unknown; more than 2 primaries; SEER cause-specific death unknown; survival months equal to zero or unknown; grade unknown; stage or Patients enrollment and exclusion process in the SEER databaseA total of 62 patients diagnosed with PC from December 2018 to February 2022 in The First Affiliated Hospital of Xinxiang Medical University were used to further validate the constructed nomogram externally. The inclusion and exclusion criteria were the same as the training set. The time of the last follow-up was March 2023. This study was approved by the institutional review board of our hospital.