U.S. 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. data (2001–2020). 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
Race, Sex, Year of Diagnosis, and Registry
- Sex
- Year of diagnosis
- Addr at DX – state
- USCS standard
- Race recode (W, B, AIAN, API)
- Race and origin recode (NHW, NHB, NHAIAN, NHAPI, Hispanic)
- Program
- Region
- USCS0120
- USCS1120
- USCS1620
- Origin recode NHIA (Hispanic, Non-Hisp)
Site and Morphology
- Primary site – labeled
- Histologic type ICD-O-3 (International Classification of Diseases for Oncology, Third Edition)
- Behavior code ICD-O-3
- Grade
Restricted to diagnosis years 2001–2017 - Grade clinical
Restricted to diagnosis year 2018 or later - Grade pathological
Restricted to diagnosis year 2018 or later - Diagnostic confirmation
- ICD-O-3 histology/behavior, labeled
- Laterality
- Site recode ICD-O-3/WHO 2008
- International Classification of Childhood Cancer (ICCC) site recode ICD-O-3/WHO 2008
- ICCC site recode extended ICD-O-3/WHO 2008
- Adolescent and young adult (AYA) site recode 2020
- Lymphoid neoplasm recode 2021
Stage – Local, Regional, Distant (LRD) [Summary and Historic]
- Merged summary stage
Stage data are not available for testis cases.
Therapy
- Rx summary – surgery primary site
Restricted to female breast and diagnosis years 2010 or later
Extent of Disease
- CS site-specific factor 1 (WHO Grade Classification)
Restricted to brain and central nervous system and diagnosis years 2011 through 2017 - Merged estrogen receptor
Restricted to female breast and diagnosis years 2004 or later - Merged progesterone receptor
Restricted to female breast and diagnosis years 2004 or later - Merged HER2 summary
Restricted to female breast and diagnosis years 2010 or later