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 Profiles Home > Joinpoint Trends - Differences
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  Joinpoint Trends - Differences
The trends in reported cancer rates for selected racial groups for specified time periods are summarized by the annual percent changes associated with each line segment obtained from fitting a joinpoint regression model to cancer rates for a time period in question.

Recent trends on this site are average annual percent changes (AAPCs) representing the most recent 5 years of data. The entire joinpoint regression line is used to help compute the AAPC. As a result of the differences in the time periods used to fit the models, the AAPCs estimated using the shorter series will be subject to more variability than the ones using the longer series. Although the AAPC from two series estimated using different time periods are not technically comparable, these results can be useful to provide an approximate summary of the trends for practical purposes. To learn more about fitting trends using joinpoint models see http://surveillance.cancer.gov/joinpoint. To learn more about computing AAPCs see http://surveillance.cancer.gov/joinpoint/aapc.html.

There are two main types of trends on the State Cancer Profiles web site.

Historical Trends, available on the Historical Trends Graph:
  • Data available down to the state/registry level
  • Unless otherwise stated:
  • - Trends start in 1975 for All Races, Whites and Blacks
    - Trends start in 1990 for American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics (due to data availability)


Recent Trends, available in numerous places:
  • Data available down to the county level
  • Unless otherwise stated:
  • - AAPCs are based on Joinpoint Regressions starting in 1990 for All Races, Whites, Blacks, American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics
Incidence Data
  • The following SEER Registries do not use 1975-2010 in their Historical Trends joinpoint computation for All Races, Whites and Blacks:
    Using 1979-2010:
    New Jersey (and counties)



  • The following SEER Registries do not have enough years of available data to do the joinpoint computation for All Races, Whites, Blacks, American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics. The recent trends for these areas are EAPCs calculated in SEER*Stat.
    Los Angeles, CA
    San Jose-Monterey, CA (and counties)
    Greater California (and counties)
    Kentucky (and counties)
    Louisiana (and counties)
    Hawaii, HI
    Honolulu, HI
    Kalawao, HI
    Kauai, HI
    Maui, HI


  • The NPCR Registries do not have enough years of available data to do the joinpoint computation for All Races, Whites, Blacks, American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics. The recent trends for these areas are EAPCs calculated in SEER*Stat.

  • Mortality Data
  • The following counties do not use 1990-2010 in their joinpoint computation for All Races, Whites, Blacks, American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics:


    Using 1994-2010:
    Aleutians East Borough, AK
    Aleutians West Census Area, AK
    Dillingham Census Area, AK
    Lake and Peninsula Borough, AK
    Skagway-Hoonah-Angoon Census Area, AK
    Yakutat City and Borough, AK

    La Paz County, AZ
    Yuma County, AZ


  • The following counties do not have enough years of available data to do the joinpoint computation for All Races, Whites, Blacks, American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics:
    Broomfield, CO

    Hawaii, HI
    Honolulu, HI
    Kalawao, HI
    Kauai, HI
    Maui, HI
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