The following combinations of SEER registries are available in the SEER databases and are commonly used in statistical analyses. Their names represent the number of registries included in the grouping.

  • SEER 8 (previously 9*) - Available for cases diagnosed from 1975 through the current data year.
  • SEER 12 (previously 13*) - Available for cases diagnosed from 1992 through the current data year and includes expanded races.
  • SEER 17 (previously 18*) - Available for cases diagnosed from 2000 through the current data year and includes expanded races.
  • SEER 22 (previously 21*)- Available for cases diagnosed from 2000 through the current data year and includes expanded races. It has a more limited set of available variables than other groupings and is only available for limited statistics.

* Starting with the 1975-2019 SEER Research Data (November 2021 submission), Detroit is no longer included in any of the new databases, and Illinois and Texas are included in the new 22-registry database.

The table below lists the SEER registries (past and present), which years of data are available, and the registry groupings in which each registry is included.

Registry Years of Diagnoses SEER 8 SEER 9b SEER 12 SEER 17 SEER 22
a Data from the Arizona Indians and Cherokee Nation are not available in the SEER Research Data.
b Detroit is a research support registry and no longer under contract to submit data. Detroit's latest data are available through the SEER 9 databases which include 1975-2018 data (supplemental Nov 2020 submissionExternal Web Site Policy).
Alaska Native Tumor Registry 1992-2021   X X X
Arizona Indiansa None
Cherokee Nationa None
Connecticut 1975-2021 X X X X X
Detroitb 1975-2018 X
Georgia Center for Cancer Statistics
Atlanta 1975-2021 X X X X X
Greater Georgia 2000-2021 X X
Rural Georgia 1992-2021   X X X
Greater Bay Area Cancer Registry
San Francisco-Oakland 1975-2021 X X X X X
San Jose-Monterey 1992-2021   X X X
Greater California 2000-2021 X X
Hawaii 1975-2021 X X X X X
Idaho 2000-2021 X
Iowa 1975-2021 X X X X X
Illinois 2000-2021 X
Kentucky 2000-2021 X X
Los Angeles 1992-2021   X X X
Louisiana 2000-2021 X X
Massachusetts 2000-2021 X
New Mexico 1975-2021 X X X X X
New Jersey 2000-2021 X X
New York 2000-2021 X
Seattle-Puget Sound 1975-2021 X X X X X
Texas 2000-2021 X
Utah 1975-2021 X X X X X

For the numbers and percentage of individuals in each grouping, see Number of Persons by Race and Hispanic Ethnicity for SEER Participants.

Databases with Varying Registry/Year Groupings

In databases through the 1975-2016 SEER Research Data, SEER research databases that do not require population data (e.g., for calculating frequencies and survival) were available with varying registries and years of data. In these databases,

  • SEER 9 registries contribute cases diagnosed from 1975 through the current data year.
  • Los Angeles, San Jose-Monterey, Rural Georgia and the Alaska Native Tumor Registry contribute cases from the period 1992 through the current data year; and
  • Greater California, Kentucky, Louisiana, New Jersey, Greater Georgia, Idaho, Massachusetts, and New York contribute cases from 2000 through the current data year, with the exception of the July - December 2005 Louisiana cases.

SEER recommends that when performing an analysis, you subset based on year or registry so you have consistent geographic coverage for the period of the analysis. Starting with the 1975-2017 SEER Research Data, SEER no longer provides databases with varying registries and years of data.