Return to Home Incidence > Table > Interpret

Interpretation of Incidence Rates Data

Incidence Rate Report for California by County

All Cancer Sites (All Stages^), 2017-2021

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

Sorted by Rate

Explanation of Column Headers

Objective - The objective of *** is from the Healthy People 2020 project done by the Centers for Disease Control and Prevention.

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


California7


US (SEER+NPCR)1


Butte County7


Shasta County7


Glenn County7


Lake County7


Marin County7


Santa Cruz County7


Yuba County7


San Luis Obispo County7


Humboldt County7


Tehama County7


Santa Barbara County7


Ventura County7


Stanislaus County7


Sonoma County7


El Dorado County7


Placer County7


Solano County7


Nevada County7


San Diego County7


Yolo County7


San Francisco County7


Mendocino County7


Sacramento County7


Amador County7


Calaveras County7


Contra Costa County7


San Bernardino County7


San Mateo County7


Plumas County7


Tuolumne County7


Sutter County7


Napa County7


Mariposa County7


Kern County7


Orange County7


Imperial County7


Riverside County7


Santa Clara County7


Fresno County7


San Joaquin County7


San Benito County7


Merced County7


Colusa County7


Madera County7


Los Angeles County7


Alameda County7


Siskiyou County7


Inyo County7


Monterey County7


Kings County7


Tulare County7


Trinity County7


Modoc County7


Del Norte County7


Mono County7


Lassen County7


Sierra County7


Alpine County7

Notes:
Created by statecancerprofiles.cancer.gov on 07/12/2025 7:27 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 (19 age groups: <1, 1-4, 5-9, ... , 80-84, 85+). 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 in the Surveillance, Epidemiology, and End Results (SEER) Summary/Historic Combined Summary Stage (2004+).
⋔ 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. More information about methodology can be found on the CI*Rank website.

Φ Rural-Urban Continuum Codes provided by the USDA.
* 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. If an average count of 3 is shown, the total number of cases for the time period is 16 or more which exceeds suppression threshold (but is rounded to 3).
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 2023 submission.
7 Source: SEER November 2023 submission.
8 Source: Incidence data provided by the SEER Program. AAPCs are calculated by the Joinpoint Regression Program and are based on APCs. Data are age-adjusted to the 2000 US standard population (19 age groups: <1, 1-4, 5-9, ... , 80-84,85+). Rates are for invasive cancer only (except for bladder cancer which is invasive and in situ) or unless otherwise specified. Population counts for denominators are based on Census populations as modified by NCI. The US Population Data File is used with SEER November 2023 data.

Data for the United States does not include data from Indiana.
Data for the United States does not include Puerto Rico.