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Age first diagnosed with skin cancer (don't know kind)

Codes and Frequencies

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For sample adults who had ever been told that they had skin cancer of an unknown type (CNSKDK), CNSKDKAG reports how old the person was when skin cancer of an unknown type was first diagnosed.

Related Variables 

CNSKDKAG is one of a series of variables reporting age at first diagnosis of specific types of cancer. Other variables in the series report age at diagnosis of the following types of cancer:

  • mouth, lip, or tongue cancer (CNMOTHAG)

  • soft tissue (muscle or fat) cancer (CNSOFTAG)

The age at first diagnosis for any other kind of cancer not previously listed is reported in CNOTHRAG.


Prior to 2019, this variable is completely comparable over time. Beginning in 2019, age values were bottom coded to 18 or younger (code = 18) and questionnaire changes were introduced. The NHIS questionnaire was substantially redesigned in 2019 to introduce a different data collection structure and new content. For more information on changes in terminology, universes, and data collection methods beginning in 2019, please see the user note.


  • 1997-2018: Sample adults age 18+ who ever told they had skin cancer (unknown kind).
  • 2019-2022: Sample adults age 18+ who ever told they had skin cancer (unknown kind) (CNSKDK).


  • 1997-2022