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Interpretation of Incidence Rates Data

Incidence Rate Report for Maryland by County

All Races (includes Hispanic), Female, Breast, All Ages
Sorted by Rate

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.

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


    Maryland6,10
    • Rate : The incidence rate is 130.3 with a 95% confidence interval from 128.5 to 132.0.
    • Average Annual Count : The count is 4,359.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -0.7
    US (SEER+NPCR)1,10
    • Rate : The incidence rate is 122.7 with a 95% confidence interval from 122.4 to 122.9.
    • Average Annual Count : The count is 216,052 §.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -0.4
    Garrett County6,10
    • Rate : The incidence rate is 112.6 with a 95% confidence interval from 92.2 to 136.4.
    • Average Annual Count : The count is 23.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -2.5
    Allegany County6,10
    • Rate : The incidence rate is 115.6 with a 95% confidence interval from 102.1 to 130.4.
    • Average Annual Count : The count is 59.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -2.8
    Kent County6,10
    • Rate : The incidence rate is 118.4 with a 95% confidence interval from 93.5 to 148.6.
    • Average Annual Count : The count is 18.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -8.1
    Prince Georges County6,10
    • Rate : The incidence rate is 118.4 with a 95% confidence interval from 113.9 to 123.1.
    • Average Annual Count : The count is 541.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -0.9
    Somerset County6,10
    • Rate : The incidence rate is 118.5 with a 95% confidence interval from 94.3 to 147.4.
    • Average Annual Count : The count is 17.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -1.5
    St. Marys County6,10
    • Rate : The incidence rate is 118.6 with a 95% confidence interval from 105.6 to 132.8.
    • Average Annual Count : The count is 62.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : falling falling trend
    • Recent AAPC : -9.8
    Washington County6,10
    • Rate : The incidence rate is 119.4 with a 95% confidence interval from 109.3 to 130.3.
    • Average Annual Count : The count is 105.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 2.3
    Frederick County6,10
    • Rate : The incidence rate is 122.7 with a 95% confidence interval from 114.2 to 131.7.
    • Average Annual Count : The count is 158.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -0.7
    Charles County6,10
    • Rate : The incidence rate is 123.1 with a 95% confidence interval from 112.0 to 135.2.
    • Average Annual Count : The count is 94.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 2.3
    Caroline County6,10
    • Rate : The incidence rate is 123.7 with a 95% confidence interval from 102.3 to 148.2.
    • Average Annual Count : The count is 24.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -9.6
    Queen Annes County6,10
    • Rate : The incidence rate is 124.4 with a 95% confidence interval from 106.8 to 144.3.
    • Average Annual Count : The count is 37.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -5.9
    Cecil County6,10
    • Rate : The incidence rate is 125.7 with a 95% confidence interval from 112.7 to 139.8.
    • Average Annual Count : The count is 70.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -4.4
    Anne Arundel County6,10
    • Rate : The incidence rate is 128.4 with a 95% confidence interval from 122.7 to 134.3.
    • Average Annual Count : The count is 396.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -1.4
    Wicomico County6,10
    • Rate : The incidence rate is 128.5 with a 95% confidence interval from 115.5 to 142.7.
    • Average Annual Count : The count is 73.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 1.6
    Baltimore City6,10
    • Rate : The incidence rate is 128.8 with a 95% confidence interval from 123.4 to 134.3.
    • Average Annual Count : The count is 451.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 0.7
    Montgomery County6,10
    • Rate : The incidence rate is 130.1 with a 95% confidence interval from 125.9 to 134.4.
    • Average Annual Count : The count is 750.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -1
    Howard County6,10
    • Rate : The incidence rate is 130.9 with a 95% confidence interval from 122.7 to 139.4.
    • Average Annual Count : The count is 204.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -4.5
    Dorchester County6,10
    • Rate : The incidence rate is 131.8 with a 95% confidence interval from 110.9 to 155.9.
    • Average Annual Count : The count is 30.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 1.1
    Carroll County6,10
    • Rate : The incidence rate is 134.6 with a 95% confidence interval from 124.5 to 145.4.
    • Average Annual Count : The count is 136.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -4.4
    Baltimore County6,10
    • Rate : The incidence rate is 135.4 with a 95% confidence interval from 130.8 to 140.1.
    • Average Annual Count : The count is 691.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -0.4
    Worcester County6,10
    • Rate : The incidence rate is 137.4 with a 95% confidence interval from 120.7 to 156.0.
    • Average Annual Count : The count is 56.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 1.5
    Harford County6,10
    • Rate : The incidence rate is 139.4 with a 95% confidence interval from 130.8 to 148.5.
    • Average Annual Count : The count is 200.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : -0.1
    Calvert County6,10
    • Rate : The incidence rate is 142.4 with a 95% confidence interval from 127.6 to 158.6.
    • Average Annual Count : The count is 71.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 3.4
    Talbot County6,10
    • Rate : The incidence rate is 146.5 with a 95% confidence interval from 126.5 to 169.3.
    • Average Annual Count : The count is 45.
    • Rate Period : The period for the rate is 2007-2011.
    • Recent Trend : stable stable trend
    • Recent AAPC : 2.2


    Notes:
    Created by statecancerprofiles.cancer.gov on 10/02/2014 6:28 am.
    Data for the United States does not include data from Nevada.
    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 1969-2012 US Population Data File is used for SEER and NPCR incidence rates.
    § The total count for the US (SEER+NPCR) may differ from the summation of the individual states reported in this table. The total uses data from the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2013 data submission for the following states: California, Kentucky, Louisiana, and New Jersey but data for those states when shown individually are sourced from the SEER November 2013 submission.

    1 Source: CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2014 data submission and SEER November 2013 submission.
    6 Source: State Cancer Registry and the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2014 data submission. State rates include rates from metropolitan areas funded by SEER.
    10 Source: Incidence data provided by the National Program of Cancer Registries (NPCR). EAPCs calculated by the National Cancer Institute using SEER*Stat. Rates 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 1969-2012 US Population Data File is used with NPCR January 2014 data.

    Please note that the data comes from different sources. Due to different years of data availablility, most of the trends are AAPCs based on APCs but some are EAPCs calculated in SEER*Stat. Please refer to the source for each graph for additional information.

    Interpret Rankings provides insight into interpreting cancer incidence statistics. When the population size for a denominator is small, the rates may be unstable. A rate is unstable when a small change in the numerator (e.g., only one or two additional cases) has a dramatic effect on the calculated rate.

    Suppression is used to avoid misinterpretation when rates are unstable.