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Interpretation of Incidence Rates Data

Incidence Rate Report for Iowa by County

Breast (All Stages^), 2018-2022

All Races (includes Hispanic), Female, All Ages

Sorted by Recentaapc

Explanation of Column Headers
Incidence Rate (95% Confidence Interval) - The incidence rate is based upon 100,000 people and is an annual rate (or average annual rate) based on the time period indicated. Rates are age-adjusted by 5-year age groups to the 2000 U.S. standard million population.

Recent Trends - This is an interpretation of the AAPC/APC:

AAPC/APC (95% Confidence Interval) - the change in rate over time


Other Notes


Line by Line Interpretation of the Report


Iowa7


US (SEER+NPCR)1


Montgomery County7


Clayton County7


Ida County7


Fremont County7


Buena Vista County7


Clay County7


Hancock County7


Wright County7


Taylor County7


Van Buren County7


Henry County7


Sac County7


Audubon County7


Boone County7


Union County7


O'Brien County7


Page County7


Wayne County7


Floyd County7


Plymouth County7


Cass County7


Mills County7


Woodbury County7


Marshall County7


Bremer County7


Cerro Gordo County7


Delaware County7


Mitchell County7


Carroll County7


Guthrie County7


Louisa County7


Osceola County7


Palo Alto County7


Crawford County7


Greene County7


Humboldt County7


Kossuth County7


Muscatine County7


Pottawattamie County7


Shelby County7


Dallas County7


Fayette County7


Lee County7


Polk County7


Scott County7


Story County7


Wapello County7


Clinton County7


Jackson County7


Madison County7


Monroe County7


Sioux County7


Buchanan County7


Emmet County7


Adair County7


Howard County7


Iowa County7


Jones County7


Marion County7


Jefferson County7


Pocahontas County7


Winneshiek County7


Worth County7


Calhoun County7


Decatur County7


Franklin County7


Johnson County7


Linn County7


Ringgold County7


Appanoose County7


Butler County7


Davis County7


Des Moines County7


Dubuque County7


Grundy County7


Hardin County7


Jasper County7


Allamakee County7


Chickasaw County7


Clarke County7


Poweshiek County7


Hamilton County7


Dickinson County7


Cedar County7


Winnebago County7


Benton County7


Harrison County7


Keokuk County7


Monona County7


Tama County7


Warren County7


Washington County7


Lucas County7


Black Hawk County7


Webster County7


Mahaska County7


Cherokee County7


Lyon County7


Adams County7


Notes:
Created by statecancerprofiles.cancer.gov on 03/14/2026 6:24 am.

State Cancer Registries may provide more current or more local data.

Trend
Rising when 95% confidence interval of average annual percent change is above 0.
Stable when 95% confidence interval of average annual percent change includes 0.
Falling when 95% confidence interval of average annual percent change is below 0.


† Incidence rates (cases per 100,000 population per year) are age-adjusted to the 2000 US standard population (SEER areas use 20 age groups and NPCR areas use 19 age groups). Rates are for invasive cancer only (except for bladder cancer which is invasive and in situ) or unless otherwise specified. Rates calculated using SEER*Stat. Population counts for denominators are based on Census populations as modified by NCI. The US Population Data File is used for SEER and NPCR incidence rates.

‡ Incidence data come from different sources. The Average Annual Percent Change (AAPC) is based on the APCs calculated by Joinpoint. Due to data availability issues, the time period used in the calculation of the joinpoint regression model may differ for selected counties.

Rates and trends are computed using different standards for malignancy. For more information see malignant.html.

^ All Stages refers to any stage. Due to changes in stage coding, Combined Summary Stage with Expanded Regional Codes (2004+) is used for data from Surveillance, Epidemiology, and End Results (SEER) databases and Merged Summary Stage is used for data from National Program of Cancer Registries databases. Due to the increased complexity with staging, other staging variables maybe used if necessary.

⋔ Results presented with the CI*Rank statistics help show the usefulness of ranks. For example, ranks for relatively rare diseases or less populated areas may be essentially meaningless because of their large variability, but ranks for more common diseases in densely populated regions can be very useful. The rates used in CI*Rank are all age-adjusted to the 2000 US standard population using 19 age groups for SEER and NPCR areas. More information about methodology can be found on the CI*Rank website.

Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.

1 Source: National Program of Cancer Registries and Surveillance, Epidemiology, and End Results SEER*Stat Database - United States Department of Health and Human Services, Centers for Disease Control and Prevention and National Cancer Institute. Based on the 2024 submission.

7 Source: SEER November 2024 submission.

* Data has been suppressed to ensure confidentiality and stability of rate estimates. Counts are suppressed if fewer than 16 records were reported in a specific area-sex-race category.

Data for United States does not include Puerto Rico.