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 9 - Available for cases diagnosed from 1975 through the current data year.
  • SEER 13 - Available for cases diagnosed from 1992 through the current data year and includes expanded races.
  • SEER 18 - Available for cases diagnosed from 2000 through the current data year and includes expanded races.
  • SEER 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.

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 9 SEER 13 SEER 18 SEER 21
a Data from the Arizona Indians and Cherokee Nation are not available in the SEER Research Data.
b Detroit and New Jersey are no longer in the SEER Program, but are included in the current data release.
c Wisconsin joined the SEER Program in 2018 as a research support registry only; not under contract to submit data.
Alaska Native Tumor Registry 1992-2017 X X X
Arizona Indiansa None
Cherokee Nationa None
Connecticut 1975-2017 X X X X
Detroitb 1975-2017 X X X X
Georgia Center for Cancer Statistics
Atlanta 1975-2017 X X X X
Greater Georgia 2000-2017 X X
Rural Georgia 1992-2017 X X X
Greater Bay Area Cancer Registry
San Francisco-Oakland 1975-2017 X X X X
San Jose-Monterey 1992-2017 X X X
Greater California 2000-2017 X X
Hawaii 1975-2017 X X X X
Idaho 2000-2017 X
Iowa 1975-2017 X X X X
Kentucky 2000-2017 X X
Los Angeles 1992-2017 X X X
Louisiana 2000-2017 X X
Massachusetts 2000-2017 X
New Mexico 1975-2017 X X X X
New Jerseyb 2000-2017 X X
New York 2000-2017 X
Seattle-Puget Sound 1975-2017 X X X X
Utah 1975-2017 X X X X
Wisconsinc None

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.

Historical Groupings

The following registry terms are no longer used in standard SEER analyses, but may be seen in historical publications and statistics.

SEER 11 Registries

The SEER 11 registries consist of the SEER 9, as described above, plus Los Angeles and San Jose-Monterey. Los Angeles and San Jose-Monterey joined the SEER Program in 1992. Therefore, data for the SEER 11 are available from 1992 and later. SEER 11 has also been used in the past to refer to SEER 13 analyses excluding Rural Georgia and the Alaska Native Tumor Registry.

SEER 17 Registries

SEER 17 was used frequently before Greater Georgia was added. The SEER 17 registries consist of the SEER 13, as described above, plus Greater California, Kentucky, Louisiana, and New Jersey. Data are available from all cases diagnosed from 2000 and later for these registries. Louisiana cases diagnosed from July - December 2005 are excluded from most statistical analyses.