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 Incidence Rates Report
National Cancer Institute State Cancer Profiles Centers for Disease Control and Prevention
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Incidence Rate Report for Massachusetts 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

  • Massachusetts6
  • Rate - The incidence rate is 134.2 with a 95% confidence interval from 132.5 to 135.8.
  • Average Annual Count - The count is 5,249.
  • Rate Period - The period for the rate is 2006-2010.
  • US (SEER+NPCR)1
  • Rate - The incidence rate is 119.8 with a 95% confidence interval from 119.6 to 120.0.
  • Average Annual Count - The count is 207,460 .
  • Rate Period - The period for the rate is 2006-2010.
  • Bristol County6
  • Rate - The incidence rate is 119.9 with a 95% confidence interval from 114.7 to 125.4.
  • Average Annual Count - The count is 402.
  • Rate Period - The period for the rate is 2006-2010.
  • Berkshire County6
  • Rate - The incidence rate is 123.5 with a 95% confidence interval from 113.3 to 134.5.
  • Average Annual Count - The count is 117.
  • Rate Period - The period for the rate is 2006-2010.
  • Suffolk County6
  • Rate - The incidence rate is 125.3 with a 95% confidence interval from 120.0 to 130.8.
  • Average Annual Count - The count is 430.
  • Rate Period - The period for the rate is 2006-2010.
  • Worcester County6
  • Rate - The incidence rate is 126.1 with a 95% confidence interval from 121.4 to 130.8.
  • Average Annual Count - The count is 578.
  • Rate Period - The period for the rate is 2006-2010.
  • Hampden County6
  • Rate - The incidence rate is 129.5 with a 95% confidence interval from 123.5 to 135.7.
  • Average Annual Count - The count is 366.
  • Rate Period - The period for the rate is 2006-2010.
  • Essex County6
  • Rate - The incidence rate is 133.4 with a 95% confidence interval from 128.7 to 138.3.
  • Average Annual Count - The count is 618.
  • Rate Period - The period for the rate is 2006-2010.
  • Hampshire County6
  • Rate - The incidence rate is 134.8 with a 95% confidence interval from 124.1 to 146.3.
  • Average Annual Count - The count is 123.
  • Rate Period - The period for the rate is 2006-2010.
  • Dukes County6
  • Rate - The incidence rate is 136.7 with a 95% confidence interval from 106.7 to 173.3.
  • Average Annual Count - The count is 15.
  • Rate Period - The period for the rate is 2006-2010.
  • Plymouth County6
  • Rate - The incidence rate is 138.3 with a 95% confidence interval from 132.4 to 144.5.
  • Average Annual Count - The count is 418.
  • Rate Period - The period for the rate is 2006-2010.
  • Norfolk County6
  • Rate - The incidence rate is 139.2 with a 95% confidence interval from 134.1 to 144.4.
  • Average Annual Count - The count is 584.
  • Rate Period - The period for the rate is 2006-2010.
  • Franklin County6
  • Rate - The incidence rate is 140.3 with a 95% confidence interval from 125.2 to 156.9.
  • Average Annual Count - The count is 67.
  • Rate Period - The period for the rate is 2006-2010.
  • Middlesex County6
  • Rate - The incidence rate is 140.4 with a 95% confidence interval from 136.9 to 144.0.
  • Average Annual Count - The count is 1,228.
  • Rate Period - The period for the rate is 2006-2010.
  • Barnstable County6
  • Rate - The incidence rate is 155.9 with a 95% confidence interval from 147.5 to 164.8.
  • Average Annual Count - The count is 295.
  • Rate Period - The period for the rate is 2006-2010.
  • Nantucket County6
  • Rate - The incidence rate is 176.7 with a 95% confidence interval from 130.2 to 235.2.
  • Average Annual Count - The count is 10.
  • Rate Period - The period for the rate is 2006-2010.


  • Notes:
    Created by statecancerprofiles.cancer.gov on 09/02/2014 5:08 am.
    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 1969-2011 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 2012 submission.

    1 Source: CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2013 data submission and SEER November 2012 submission.
    6 Source: State Cancer Registry and the CDC's National Program of Cancer Registries Cancer Surveillance System (NPCR-CSS) January 2013 data submission. State rates include rates from metropolitan areas funded by SEER.

    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.