SEER

The Surveillance, Epidemiology, and End Results (SEER) program, run by the NCI since 1973, is the authoritative source of U.S. cancer-incidence and survival data. It collects population-based information from a network of cancer registries covering roughly half of the U.S. population (with geographic stratification by region, urbanicity and several historical demographics) and links to Medicare claims for the SEER-Medicare resource used in health-services research.

For researchers it provides incidence, prevalence, survival, mortality and stage-at-diagnosis statistics by cancer type, demographic group and geography. Data is released annually in tiers — open summaries through SEER*Stat and SEER*Explorer, restricted research files under data-use agreement.