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Interpretation of Incidence Rates Data

Incidence Rate Report for Iowa by County

Colon & Rectum (All Stages^), 2018-2022

All Races (includes Hispanic), Both Sexes, Ages 65+

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


Marshall County7


Hardin County7


Mahaska County7


Winneshiek County7


Sioux County7


Poweshiek County7


Dallas County7


Page County7


Jones County7


Linn County7


Black Hawk County7


Carroll County7


Washington County7


Cedar County7


Polk County7


Scott County7


Humboldt County7


Benton County7


Dickinson County7


Des Moines County7


Webster County7


Dubuque County7


O'Brien County7


Appanoose County7


Johnson County7


Kossuth County7


Jackson County7


Plymouth County7


Allamakee County7


Clay County7


Davis County7


Palo Alto County7


Pottawattamie County7


Buena Vista County7


Bremer County7


Butler County7


Clinton County7


Keokuk County7


Clayton County7


Harrison County7


Iowa County7


Story County7


Boone County7


Cerro Gordo County7


Mills County7


Delaware County7


Jefferson County7


Muscatine County7


Union County7


Wright County7


Franklin County7


Howard County7


Louisa County7


Sac County7


Hamilton County7


Lee County7


Lyon County7


Shelby County7


Warren County7


Guthrie County7


Monona County7


Wapello County7


Floyd County7


Henry County7


Jasper County7


Woodbury County7


Buchanan County7


Madison County7


Tama County7


Cherokee County7


Crawford County7


Grundy County7


Cass County7


Hancock County7


Winnebago County7


Decatur County7


Mitchell County7


Fayette County7


Emmet County7


Chickasaw County7


Marion County7


Greene County7


Monroe County7


Calhoun County7


Clarke County7


Fremont County7


Van Buren County7


Worth County7


Adair County7 Adams County7 Audubon County7 Ida County7 Lucas County7 Montgomery County7 Osceola County7 Pocahontas County7 Ringgold County7 Taylor County7 Wayne County7


Notes:
Created by statecancerprofiles.cancer.gov on 03/26/2026 3:40 am.

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

† 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.

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.

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.

Source: SEER and NPCR data. For more specific information please see the table.

* 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.