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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. Because we do not have enough information to compute
cancer rates for the same calendar years for all racial groups, the joinpoint regression models use the
most data available for each group. 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://srab.cancer.gov/joinpoint.
To learn more about computing AAPCs
see http://srab.cancer.gov/joinpoint/aapc.html.
Unless stated below, the recent trend for All Races, Whites and Blacks is computed using 1975-2006 data. Unless stated below, the recent trend for
American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics is computed using 1990-2006 data (due to data availability).
Due to counties changing over time or data availability, the following states/counties use a different time period to fit the model.
Incidence Data
The following SEER Registries do not use 1975-2006 in their joinpoint computation for All Races, Whites and Blacks:
Using 1979-2006:
New Jersey (and counties)
Using 1982-2006:
Cibola County, NM
Valencia County, NM
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 1975-2006 in their joinpoint computation for All Races, Whites and Blacks:
Using 1980-2006:
Bronx County, NY
Kings County, NY
New York County, NY
Queens County, NY
Richmond County, NY
Alexandria City, VA
Alleghany County and Clifton Forge City, VA
Arlington County, VA
Bedford City, VA
Bedford County, VA
Covington City, VA
Fairfax City, VA
Fairfax County, VA
Falls Church City, VA
Fredericksburg City, VA
Harrisonburg City, VA
Henry County, VA
Martinsville City, VA
Rockingham County, VA
Spotsylvania County, VA
Stafford County, VA
Using 1982-2006:
Cibola County, NM
Valencia County, NM
James City County, VA
Manassas City, VA
Manassas Park City, VA
Poquoson City, VA
Prince William County, VA
Williamsburg City, VA
York County, VA
Using 1990-2006:
Anchorage Municipality, AK
Bethel Census Area, AK
Bristol Bay Borough, AK
Denali Borough, AK
Fairbanks North Star Borough, AK
Haines Borough, AK
Juneau City and Borough, AK
Kenai Peninsula Borough, AK
Ketchikan Gateway Borough, AK
Kodiak Island Borough, AK
Matanuska-Susitna Borough, AK
Nome Census Area, AK
North Slope Borough, AK
Northwest Arctic Borough, AK
Prince of Wales-Outer Ketchikan Census Area, AK
Sitka City and Borough, AK
Southeast Fairbanks Census Area, AK
Valdez-Cordova Census Area, AK
Wade Hampton Census Area, AK
Wrangell-Petersburg Census Area, AK
Yukon-Koyukuk, AK
The following counties only use the last 11 years in their joinpoint computation for All Races, Whites, Blacks, American-Indians/Alaskan Natives, Asian Pacific Islanders, Hispanics, White Hispanics, and White Non-Hispanics:
Using 1995-2006:
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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