The following combinations of the SEER registries are commonly used in various statistical analyses. For the numbers and percentage of individuals in each database grouping, see Number of Persons by Race and Hispanic Ethnicity for SEER Participants.

SEER 9 Registries

The SEER 9 registries are Atlanta, Connecticut, Detroit, Hawaii, Iowa, New Mexico, San Francisco-Oakland, Seattle-Puget Sound, and Utah. Data are available for cases diagnosed from 1973 and later for these registries with the exception of Seattle-Puget Sound and Atlanta. The Seattle-Puget Sound and Atlanta registries joined the SEER Program in 1974 and 1975, respectively.

SEER 13 Registries

The SEER 13 registries consist of the SEER 9, as described above, plus Los Angeles, San Jose-Monterey, Rural Georgia and the Alaska Native Tumor Registry. Data are available from all cases diagnosed from 1992 and later for these registries. These registries report on expanded race.

SEER 18 Registries

The SEER 18 registries consist of the SEER 13, as described above, plus Greater California, Greater Georgia, 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: all Louisiana cases are excluded from prevalence analyses. See Adjustments for Areas Impacted by Hurricanes Katrina and Rita for more information.

Databases with Varying Registry/Year Groupings

SEER research databases that do not require population data (e.g., for calculating frequencies and survival) are available with varying registries and years of data. In these databases,

  • SEER 9 registries contribute cases diagnosed from 1973 through the current data year, except for Seattle-Puget Sound and Atlanta, which contribute cases beginning with 1974 and 1975, respectively.
  • 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, and Greater Georgia 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.

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 on. 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.