High Validity of the Danish National Patient Registry for Systemic Anticancer Treatment Registration from 2009 to 2019
Published 3 June 2022 Background: The Danish National Patient Registry is a major resource for Danish epidemiology. Only a few studies have been conducted to check the validity of the reporting of systemic anticancer treatments. In this study, we assessed this validity for a range of cancer types over a long period of time. Patients and Methods: We extracted systemic anticancer treatment procedure