State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Connecticut by County

Colon & Rectum (Late Stage^), 2018-2022

All Races (includes Hispanic), Both Sexes, Ages 50+

Sorted by Name

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.

Percent of Cases with Late Stage - This is the number of late stages cases compared to the number of cases for all stages.

Other Notes

• Larger confidence intervals indicate less stability of the data. This is often due to low counts that are not quite low enough to be suppressed.
• Data is currently being suppressed if there are fewer than 16 counts for the time period.

Line by Line Interpretation of the Report

Connecticut⁷

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 55.0 with a 95% confidence interval from 53.2 to 56.8 and 761 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 64.3 with a 95% confidence interval from 64.1 to 64.5 and 75,131 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A

Fairfield County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 52.4 with a 95% confidence interval from 49.0 to 55.9 and 183 average annual cases over 2018-2022.
• CI*Rank ⋔ : 5 (3, 8)
• Percent of Cases with Late Stage :

Hartford County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 58.2 with a 95% confidence interval from 54.5 to 62.0 and 195 average annual cases over 2018-2022.
• CI*Rank ⋔ : 2 (1, 5)
• Percent of Cases with Late Stage :

Litchfield County⁷

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 54.8 with a 95% confidence interval from 47.9 to 62.5 and 47 average annual cases over 2018-2022.
• CI*Rank ⋔ : 4 (1, 8)
• Percent of Cases with Late Stage :

Middlesex County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 50.0 with a 95% confidence interval from 42.9 to 57.9 and 37 average annual cases over 2018-2022.
• CI*Rank ⋔ : 6 (2, 8)
• Percent of Cases with Late Stage :

New Haven County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 58.8 with a 95% confidence interval from 55.1 to 62.6 and 194 average annual cases over 2018-2022.
• CI*Rank ⋔ : 1 (1, 4)
• Percent of Cases with Late Stage :

New London County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 49.2 with a 95% confidence interval from 43.3 to 55.5 and 53 average annual cases over 2018-2022.
• CI*Rank ⋔ : 8 (3, 8)
• Percent of Cases with Late Stage :

Tolland County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 49.6 with a 95% confidence interval from 41.5 to 58.9 and 27 average annual cases over 2018-2022.
• CI*Rank ⋔ : 7 (2, 8)
• Percent of Cases with Late Stage :

Windham County⁷

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 55.7 with a 95% confidence interval from 46.2 to 66.7 and 25 average annual cases over 2018-2022.
• CI*Rank ⋔ : 3 (1, 8)
• Percent of Cases with Late Stage :

Notes:
Created by statecancerprofiles.cancer.gov on 03/25/2026 7:31 pm.

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 are computed using cancers classified as malignant based on ICD-O-3. For more information see malignant.html.

^ Late Stage is defined as cases determined to be regional or distant. 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.

Note: This website still uses Connecticut counties instead of planning regions for consistency of geographies across data topics. If/when all data sources have new planning regions, then this website will switch to using them.

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

Data for United States does not include Puerto Rico.