National databases within the field of oncology capture detailed data on incident cancer diagnoses across a wide proportion of the population in the USA and represent a valuable resource for health service researchers as they study trends in cancer incidence, prevalence, treatment patterns, and disparities in oncologic outcomes.
1,2 To fill gaps left by randomized controlled trials—the highest level of evidence—researchers increasingly rely on these databases to evaluate the effectiveness of cancer treatments.
1 Additionally, these databases can be harnessed to help shape public policy by orienting prevention efforts and health care planning. …
