Final answer:
The correct answer is 3) Both (a) and (b). Examples of central cancer registries that are population-based include state cancer registries, the National Program of Cancer Registries (NPCR), the Surveillance, Epidemiology, and End Results (SEER) program, and the National Cancer Database (NCDB).
Step-by-step explanation:
The correct answer is 3) Both (a) and (b).
A central cancer registry (CCR) is a database that collects and maintains information about cancer cases within a specific geographic area. Population-based CCRs aim to capture data from the entire population in their designated area, providing a more comprehensive picture of cancer incidence and outcomes.
Examples of population-based CCRs include state cancer registries and the National Program of Cancer Registries (NPCR), which collect information on cancer cases at the state level. Another example is the Surveillance, Epidemiology, and End Results (SEER) program, which is a population-based registry covering specific regions in the United States. The National Cancer Database (NCDB) is also a population-based registry that collects data from various hospitals across the country.