What percentage of newly diagnosed cancer patients are accessioned into the National Cancer Data Base annually?

• A. 60%
• B. 80%
• C. 70%
• D. 50%

Answer: (C)

Understanding how comprehensive the NCDB is helps you gauge how representative national cancer data are. The National Cancer Data Base collects information from Commission on Cancer–accredited facilities and currently captures roughly seven out of every ten newly diagnosed cancer cases each year. This substantial coverage supports reliable benchmarking and research across tumor types and treatment settings, since a large and diverse sample is included. It isn’t everyone, though—some patients are treated outside accredited centers or in settings that don’t report to NCDB—so the figure is an approximate 70% capture. Therefore, about 70% is the best estimate.