Total Number of SEER-CAHPS Respondents

Number of cancer and non-cancer survey respondents by SEER region and SEER-CAHPS plan type (1997-2022)

This figure shows the number of CAHPS survey respondents in SEER-CAHPS based on cancer diagnosis in a SEER region and by Medicare plan type.

  • Total Sample
    2,513,748

    • Cancer Cases
      686,735

        • FFS
          293,681

            • Survey Before Cancer DX
              141,067

            • Survey After Cancer DX
              152,614

        • MA
          393,054

            • Survey Before Cancer DX
              215,062

            • Survey After Cancer DX
              177,992

    • Non-Cancer Cases Residing in a SEER Region
      1,827,013

        • FFS
          728,259

        • MA
          1,098,754

Note: some respondents have taken more than one survey, at different years. This figure reflects the first survey taken.

Last Updated: 18 Jun, 2025