Identifying Recurrences Among Non-Metastatic Colorectal Cancer Patients Using National Health Data Registries: Validation and Optimization of a Registry-Based Algorithm in a Modern Danish Cohort.
Jesper NorsTrine Block MattesenDeirdre P Cronin-FentonAurelie MailhacJesper Bertram BramsenKåre Andersson GotschalckRune ErichsenClaus Lindbjerg AndersenPublished in: Clinical epidemiology (2023)
The algorithm detected recurrence and TTR with high precision in this contemporary cohort. Restriction to chemotherapy codes from oncology departments using department classifications improves the algorithm. The algorithm is suitable for use in future observational studies.