Joinpoint Trends - Differences - State Cancer Profiles

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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. State Cancer Profiles uses the Joinpoint Regression Program.

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. 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 https://surveillance.cancer.gov/joinpoint/.

Note regarding COVID: The 2020 incidence rate is displayed (on historical trends graphs) but not used in the fit of the trend line(s) on historical trends or recent trends. Impact of COVID on SEER Cancer Incidence 2020 data

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

Historical Trends, available on the Historical Trends Graph:

Recent Trends, available in numerous places.

Incidence Data

Historical Trends, available on the Historical Trends Graph:

Data available down to the state/registry level
Unless otherwise stated:

- Trends start in 2002 for most states (NPCR data source).

- For SEER areas (Atlanta, Connecticut, Iowa, Los Angeles, New Mexico, Rural Georgia, Seattle, SF-Oak, San Jose-Monterey, Utah)

- Trends start in 1992 for All Races, White Non-Hispanic, Black Non-Hispanic, American-Indians/Alaskan Natives Non-Hispanic, Asian Pacific Islanders Non-Hispanic, and Hispanic

Recent Trends, available in numerous places:

Data available down to the county level
Unless otherwise stated:

- AAPCs are based on Joinpoint Regressions starting in 2002 (NPCR areas) and 1992 (for SEER areas where possible) for All Races, White Non-Hispanic, Black Non-Hispanic, American-Indians/Alaskan Natives Non-Hispanic, Asian Pacific Islanders Non-Hispanic, and Hispanic

The following SEER Registries use 2000+ for their Historical and Recent Trend joinpoint computations:

California

Greater California (and counties)

Georgia (as a state and counties not in Atlanta or Rural Georgia)

Hawaii (and counties)

Idaho (and counties)

Illinois (and counties)

Kentucky (and counties)

Louisiana (and counties)

New Jersey (and counties)

New York (and counties)

Texas (and counties)

The following area uses 2005+ for its Historical and Recent Trend joinpoint computations:

Puerto Rico

Mortality Data

Historical Trends, available on the Historical Trends Graph:

Data available down to the state level
Unless otherwise stated:

- Trends start in 2000 for All Races, White Non-Hispanic, Black Non-Hispanic, American-Indians/Alaskan Natives Non-Hispanic, Asian Pacific Islanders Non-Hispanic, and Hispanic

Recent Trends, available in numerous places:

Data available down to the county level
Unless otherwise stated:

- AAPCs are based on Joinpoint Regressions starting in 2000 for All Races, White Non-Hispanic, Black Non-Hispanic, American-Indians/Alaskan Natives Non-Hispanic, Asian Pacific Islanders Non-Hispanic, and Hispanic

The following counties do not use 2000+ in their joinpoint computation for All Races, White Non-Hispanic, Black Non-Hispanic, American-Indians/Alaskan Natives Non-Hispanic, Asian Pacific Islanders Non-Hispanic, and Hispanic :

Using 2002+:

Adams County, CO

Boulder County, CO

Broomfield County, CO

Jefferson County, CO

Weld County, CO

The Puerto Rico data do not have enough years of available data to do the joinpoint computation. The recent trends for this area are EAPCs calculated in SEER*Stat.