State Cancer Profiles

Interpretation of Incidence Rates Data

Incidence Rate Report for Maryland by County

Breast (All Stages^), 2017-2021

All Races (includes Hispanic), Female, All Ages

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:

• 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

Maryland⁶

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 135.5 with a 95% confidence interval from 133.9 to 137.2 and 5,267 average annual cases over 2017-2021.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is stable because the trend is 0.7 with a 95% confidence interval from -2.3 to 2.7.

US (SEER+NPCR)¹

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Rate : The incidence rate is 129.8 with a 95% confidence interval from 129.5 to 130.0 and 258,398 average annual cases over 2017-2021.
• CI*Rank ⋔ : N/A
• Recent Trend : The trend is rising because the trend is 0.6 with a 95% confidence interval from 0.4 to 0.8.

Talbot County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 151.4 with a 95% confidence interval from 129.5 to 176.4 and 48 average annual cases over 2017-2021.
• CI*Rank ⋔ : 1 (1, 21)
• Recent Trend : The trend is stable because the trend is 1.1 with a 95% confidence interval from -1.0 to 3.1.

Allegany County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 148.6 with a 95% confidence interval from 132.1 to 166.7 and 71 average annual cases over 2017-2021.
• CI*Rank ⋔ : 2 (1, 19)
• Recent Trend : The trend is stable because the trend is 1.2 with a 95% confidence interval from -0.8 to 3.4.

Carroll County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 145.2 with a 95% confidence interval from 135.0 to 156.1 and 164 average annual cases over 2017-2021.
• CI*Rank ⋔ : 3 (1, 16)
• Recent Trend : The trend is stable because the trend is 0.4 with a 95% confidence interval from -0.6 to 1.6.

Baltimore County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 144.5 with a 95% confidence interval from 140.0 to 149.2 and 823 average annual cases over 2017-2021.
• CI*Rank ⋔ : 4 (1, 10)
• Recent Trend : The trend is rising because the trend is 1.0 with a 95% confidence interval from 0.5 to 2.3.

Harford County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 144.2 with a 95% confidence interval from 135.9 to 152.9 and 244 average annual cases over 2017-2021.
• CI*Rank ⋔ : 5 (1, 15)
• Recent Trend : The trend is rising because the trend is 1.2 with a 95% confidence interval from 0.2 to 2.4.

Howard County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 139.9 with a 95% confidence interval from 132.5 to 147.7 and 275 average annual cases over 2017-2021.
• CI*Rank ⋔ : 6 (1, 17)
• Recent Trend : The trend is stable because the trend is 0.2 with a 95% confidence interval from -0.5 to 0.9.

Worcester County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 138.7 with a 95% confidence interval from 121.6 to 157.8 and 62 average annual cases over 2017-2021.
• CI*Rank ⋔ : 7 (1, 23)
• Recent Trend : The trend is stable because the trend is -0.2 with a 95% confidence interval from -1.1 to 0.5.

Calvert County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 138.6 with a 95% confidence interval from 124.8 to 153.6 and 80 average annual cases over 2017-2021.
• CI*Rank ⋔ : 8 (1, 22)
• Recent Trend : The trend is stable because the trend is 0.9 with a 95% confidence interval from -0.4 to 2.3.

Queen Annes County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 136.8 with a 95% confidence interval from 118.8 to 157.1 and 46 average annual cases over 2017-2021.
• CI*Rank ⋔ : 9 (1, 23)
• Recent Trend : The trend is stable because the trend is 1.7 with a 95% confidence interval from 0.0 to 3.5.

Anne Arundel County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 136.5 with a 95% confidence interval from 131.0 to 142.2 and 492 average annual cases over 2017-2021.
• CI*Rank ⋔ : 10 (4, 18)
• Recent Trend : The trend is stable because the trend is 0.3 with a 95% confidence interval from -0.5 to 1.3.

Montgomery County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 136.3 with a 95% confidence interval from 132.3 to 140.5 and 904 average annual cases over 2017-2021.
• CI*Rank ⋔ : 11 (5, 17)
• Recent Trend : The trend is stable because the trend is 0.0 with a 95% confidence interval from -0.7 to 0.7.

Washington County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 134.7 with a 95% confidence interval from 124.2 to 145.9 and 133 average annual cases over 2017-2021.
• CI*Rank ⋔ : 12 (2, 22)
• Recent Trend : The trend is rising because the trend is 0.8 with a 95% confidence interval from 0.2 to 1.5.

St. Marys County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 133.8 with a 95% confidence interval from 121.0 to 147.6 and 84 average annual cases over 2017-2021.
• CI*Rank ⋔ : 13 (1, 23)
• Recent Trend : The trend is rising because the trend is 1.5 with a 95% confidence interval from 0.3 to 2.9.

Somerset County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 133.1 with a 95% confidence interval from 106.1 to 165.3 and 19 average annual cases over 2017-2021.
• CI*Rank ⋔ : 14 (1, 24)
• Recent Trend : The trend is stable because the trend is 0.8 with a 95% confidence interval from -2.3 to 4.0.

Frederick County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 132.7 with a 95% confidence interval from 124.6 to 141.1 and 213 average annual cases over 2017-2021.
• CI*Rank ⋔ : 15 (4, 22)
• Recent Trend : The trend is stable because the trend is 0.2 with a 95% confidence interval from -0.7 to 1.2.

Charles County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 131.6 with a 95% confidence interval from 121.4 to 142.4 and 130 average annual cases over 2017-2021.
• CI*Rank ⋔ : 16 (3, 23)
• Recent Trend : The trend is stable because the trend is 0.7 with a 95% confidence interval from -0.3 to 1.7.

Wicomico County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 129.6 with a 95% confidence interval from 116.7 to 143.6 and 81 average annual cases over 2017-2021.
• CI*Rank ⋔ : 17 (3, 24)
• Recent Trend : The trend is stable because the trend is -0.1 with a 95% confidence interval from -2.4 to 2.3.

Baltimore City⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 127.3 with a 95% confidence interval from 121.9 to 132.8 and 459 average annual cases over 2017-2021.
• CI*Rank ⋔ : 18 (11, 23)
• Recent Trend : The trend is stable because the trend is 0.6 with a 95% confidence interval from 0.0 to 1.2.

Prince Georges County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 127.1 with a 95% confidence interval from 122.9 to 131.4 and 750 average annual cases over 2017-2021.
• CI*Rank ⋔ : 19 (12, 22)
• Recent Trend : The trend is stable because the trend is 0.4 with a 95% confidence interval from -0.1 to 1.0.

Cecil County⁶

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Rate : The incidence rate is 124.9 with a 95% confidence interval from 112.6 to 138.2 and 82 average annual cases over 2017-2021.
• CI*Rank ⋔ : 20 (6, 24)
• Recent Trend : The trend is stable because the trend is 0.7 with a 95% confidence interval from -0.9 to 2.4.

Garrett County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 122.9 with a 95% confidence interval from 102.1 to 147.3 and 28 average annual cases over 2017-2021.
• CI*Rank ⋔ : 21 (1, 24)
• Recent Trend : The trend is stable because the trend is -0.1 with a 95% confidence interval from -2.1 to 1.9.

Dorchester County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 115.6 with a 95% confidence interval from 96.3 to 138.1 and 29 average annual cases over 2017-2021.
• CI*Rank ⋔ : 22 (4, 24)
• Recent Trend : The trend is stable because the trend is 0.3 with a 95% confidence interval from -1.2 to 1.8.

Caroline County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 114.4 with a 95% confidence interval from 95.0 to 137.0 and 26 average annual cases over 2017-2021.
• CI*Rank ⋔ : 23 (5, 24)
• Recent Trend : The trend is stable because the trend is -1.0 with a 95% confidence interval from -2.6 to 0.7.

Kent County⁶

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Rate : The incidence rate is 113.6 with a 95% confidence interval from 86.9 to 146.5 and 17 average annual cases over 2017-2021.
• CI*Rank ⋔ : 24 (2, 24)
• Recent Trend : The trend is stable because the trend is -0.2 with a 95% confidence interval from -3.6 to 3.1.

Notes:
Created by statecancerprofiles.cancer.gov on 10/10/2024 10:11 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 (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.
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+).
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: SEER and NPCR data. For more specific information please see the table.

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