During which time period did many states begin to collect cancer incidence data on a statewide basis?

The choice indicating the late 1970s and early 1980s reflects a significant development in cancer surveillance efforts in the United States. During this period, there was an increasing awareness of the importance of monitoring cancer incidence to inform public health initiatives and research. This led to the establishment of several statewide cancer registries as part of a coordinated effort to collect and analyze cancer data.

The National Cancer Act of 1971 is a key landmark in this history, as it marked the federal government's increased involvement in cancer research and control. Following this legislation, various states recognized the need for systematic data collection to track cancer rates and identify trends over time. The late 1970s and early 1980s saw the emergence of standardized methods for cancer data collection, which were critical for understanding the epidemiology of the disease and providing resources for prevention and treatment planning.

Collecting cancer incidence data at a statewide level has helped improve cancer care and has led to the development of targeted interventions based on the specific needs of populations. This foundational work laid the groundwork for enhanced cancer surveillance and research programs that continue to evolve today.