Which of these is an administrative database that collects information on cancer incidence from all provincial and territorial cancer registries in Canada?

The correct answer is A, which refers to the Canadian Cancer Registry (CCR). The CCR is a national administrative database specifically designed to collect and compile detailed information on cancer incidence across Canada. It aggregates data from all provincial and territorial cancer registries, allowing for a comprehensive overview of cancer trends, demographics, and statistics at a national level.

This registry plays a crucial role in public health, research, and policy-making by providing essential data on cancer types, incidence rates, and survival statistics. The centralized nature of the CCR helps ensure that information is systematically recorded and standardized, which is important for monitoring and addressing the cancer burden in the population.

While the other options reference different databases, they serve distinct purposes. The Canadian Joint Replacement Registry (CJRR) focuses on joint replacement surgeries, the Discharge Abstract Database (DAD) collects information on inpatient hospitalizations, and Management Information Systems (MIS) encompass a broader range of healthcare organizational data rather than being specifically dedicated to cancer incidence. Thus, the CCR is the most appropriate choice for this context.