Invasive Breast Cancer Incidence by Age at Diagnosis for Females,
Jackson County Health Department,
Michigan Residents, 1985 - 2020
Year of
Diagnosis		 Less than 50 50 - 74 75 and Older
Average
Number		 Age-specific
Rate		 Average
Number		 Age-specific
Rate		 Average
Number		 Age-specific
Rate
2018-2020 16   34.4 ±9.8 79   307.4 ±37.8 28   411.3 ±84.1
2017-2019 14   30.7 ±9.2 70   277.4 ±36.2 24   352.4 ±78.4
2016-2018 17   37.1 ±10.1 70   278.8 ±36.4 24   364.2 ±80.4
2015-2017 18   37.6 ±10.1 66   261.5 ±35.4 22   337.4 ±78.0
2014-2016 19   40.2 ±10.4 78   313.5 ±38.7 26   393.8 ±83.7
2013-2015 17   36.2 ±9.9 76   310.5 ±38.8 26   399.2 ±84.3
2012-2014 18   37.3 ±9.9 75   311.3 ±39.1 27   415.2 ±85.8
2011-2013 20   41.1 ±10.4 70   292.9 ±38.4 25   380.1 ±82.6
2010-2012 20   41.2 ±10.3 65   277.3 ±37.8 21   323.3 ±76.7
2009-2011 21   41.4 ±10.3 62   270.4 ±37.8 22   337.8 ±78.1
2008-2010 22   42.7 ±10.4 62   280.5 ±38.9 25   373.1 ±81.7
2007-2009 23   43.9 ±10.4 64   293.9 ±40.3 28   423.8 ±86.5
2006-2008 24   45.0 ±10.4 61   289.0 ±40.5 29   434.0 ±87.4
2005-2007 25   46.8 ±10.5 57   275.5 ±40.1 29   438.8 ±87.8
2004-2006 24   44.5 ±10.2 60   298.4 ±42.2 29   439.9 ±88.0
2003-2005 23   43.0 ±10.0 60   308.3 ±43.5 28   428.9 ±86.9
2002-2004 24   43.4 ±10.1 61   319.9 ±44.8 29   436.7 ±87.9
2001-2003 24   44.5 ±10.2 61   327.5 ±45.8 27   414.7 ±86.3
2000-2002 25   46.3 ±10.4 60   331.3 ±46.6 31   483.9 ±93.1
1999-2001 21   39.0 ±9.5 58   327.1 ±46.8 29   458.4 ±91.5
1998-2000 20   36.6 ±9.3 51   293.2 ±44.9 28   453.7 ±91.7
1997-1999 18   32.3 ±8.7 47   276.9 ±44.1 22   357.8 ±83.2
1996-1998 17   31.7 ±8.6 45   267.9 ±43.9 20   336.7 ±81.7
1995-1997 17   31.1 ±8.6 50   301.2 ±46.6 24   412.3 ±90.5
1994-1996 19   35.0 ±9.1 56   338.2 ±49.3 26   443.5 ±94.3
1993-1995 20   37.0 ±9.4 59   357.2 ±50.6 28   493.1 ±99.7
1992-1994 20   37.8 ±9.5 52   316.0 ±48.0 21   370.1 ±88.7
1991-1993 18   33.4 ±8.9 50   306.8 ±47.4 21   378.8 ±90.7
1990-1992 17   32.2 ±8.8 57   351.0 ±50.5 20   383.2 ±92.4
1989-1991 17   31.7 ±8.7 63   389.0 ±53.0 25   485.9 ±104.2
1988-1990 17   31.8 ±8.8 64   398.2 ±53.6 24   472.2 ±104.3
1987-1989 17   31.3 ±8.7 56   345.3 ±50.3 23   476.8 ±106.0
1986-1988 15   28.3 ±8.3 54   334.6 ±49.7 21   432.5 ±102.8
1985-1987 15   29.1 ±8.5 57   355.7 ±51.3 19   414.0 ±102.1
             

 

Notes: Age-specific Rate is per 100,000 population in a specific age group.  Adding and subtracting the number shown after the ± symbol from the rate creates a confidence interval indicating that the true rate lies between the lower and upper bounds of this interval with 95% statistical confidence.

COVID-19 Pandemic: In 2020, the highly publicized impact of the COVID-19 pandemic on health services and the consequential delays and reductions in cancer screening and diagnosis led to a decline in the 2020 incidence rates for most cancer sites. Because 2020 was a temporary, anomalous year, it can bias estimates such as cancer incidence trends.

Average Number is the number of new invasive cancer cases diagnosed in the period, divided by the number of years in the period.

Case: A case is defined as a person with any newly diagnosed cancer with a behavior code of 3 (malignant primary site). Both in-situ and invasive urinary bladder cancer cases are included, in order to be consistent with national tabulations from the National Cancer Institute.
Source: Michigan Resident Cancer Incidence File. Updated with cases processed through November 30, 2022. Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services.
Last Updated: April 13, 2023