True or False: Some central registries, such as the National Cancer Data Base, are population-based.

The statement regarding whether some central registries, such as the National Cancer Data Base, are population-based is true. In the context of cancer registries, population-based registries collect and analyze data on cancer cases in a defined population, ensuring comprehensive coverage of the population's cancer incidence.

The National Cancer Data Base (NCDB) is a clinical oncology database that includes data from accredited cancer programs across the United States, focusing on patient demographics, treatment patterns, and outcomes. However, it specifically contains data from hospitals that participate in the Commission on Cancer program, which means it does not represent the entire population universally across different regions. Thus, while it serves as a significant resource for understanding cancer treatment and outcomes, it is not purely a population-based registry in the same way that state cancer registries or the Surveillance, Epidemiology, and End Results (SEER) program are, which aim to provide a more comprehensive, population-level data view.

Understanding the distinction between various types of registries, including their scope and the populations they serve, is crucial for anyone studying cancer registry structure and management.