State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Delaware by County

All Cancer Sites (All Stages^), 2018-2022

Hispanic (any race), Both Sexes, 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:

• Rising when 95% confidence interval of AAPC/APC is above 0.
• Stable when 95% confidence interval of AAPC/APC includes 0.
• Falling when 95% confidence interval of AAPC/APC is below 0.

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

• Average Annual Percent Change - AAPCs are based upon APCs that were calculated by Joinpoint Regression Program
• Annual Percent Change - APCs calculated in SEER*Stat.

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

Delaware²

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 325.3 with a 95% confidence interval from 304.2 to 347.5 and 213 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is because the trend is -1.8 with a 95% confidence interval from -2.8 to -0.5.

US (SEER+NPCR)§¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 354.7 with a 95% confidence interval from 353.9 to 355.5 and 165,518 average annual cases over 2018-2022.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is because the trend is -0.2 with a 95% confidence interval from -0.5 to 0.5.

Sussex County²

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 283.9 with a 95% confidence interval from 245.6 to 326.2 and 48 average annual cases over 2018-2022.
• CI*Rank ⋔ : 3 (2, 3)
• Recent Trend : The trend is because the trend is -2.4 with a 95% confidence interval from -3.8 to -0.4.

New Castle County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 330.6 with a 95% confidence interval from 303.0 to 359.8 and 131 average annual cases over 2018-2022.
• CI*Rank ⋔ : 2 (1, 3)
• Recent Trend : The trend is because the trend is -1.7 with a 95% confidence interval from -2.9 to -0.3.

Kent County²

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 379.4 with a 95% confidence interval from 321.5 to 443.9 and 35 average annual cases over 2018-2022.
• CI*Rank ⋔ : 1 (1, 2)
• Recent Trend : The trend is because the trend is -1.0 with a 95% confidence interval from -2.9 to 1.6.

Notes:
Created by statecancerprofiles.cancer.gov on 03/20/2026 1:27 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 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.

NHIA (NAACCR Hispanic Identification Algorithm) was used for Hispanic Ethnicity (see Technical Notes section of the USCS).

Data for United States does not include Puerto Rico.