U.S. and Puerto Rico Data Variable Definitions

U.S. Cancer Statistics Public Use Database

The following variables are available in the U.S. Cancer Statistics Public Use Database, U.S. and Puerto Rico data (2005–2020). They are listed by SEER*Stat category. Click on the variable name for more information, including the source, description, and considerations for use.

Age at Diagnosis

Sex, Year of Diagnosis, and Registry

Site and Morphology

Stage – Local, Regional, Distant (LRD) [Summary and Historic]


Extent of Disease

Multiple Primary Fields


Merged System-Supplied