Invasive Breast Cancer Incidence by Age at Diagnosis for Females,
Macomb County, 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 132   49.5 ±4.8 474   329.0 ±16.4 162   420.3 ±35.5
2017-2019 132   49.3 ±4.8 471   330.0 ±16.5 164   423.6 ±35.6
2016-2018 125   46.7 ±4.7 465   328.6 ±16.6 159   418.7 ±35.7
2015-2017 121   44.8 ±4.6 438   313.1 ±16.3 148   395.9 ±35.1
2014-2016 126   46.6 ±4.7 434   315.0 ±16.5 145   391.6 ±35.0
2013-2015 130   48.1 ±4.7 420   310.7 ±16.5 143   386.9 ±34.9
2012-2014 130   47.9 ±4.7 442   334.5 ±17.3 153   413.3 ±35.9
2011-2013 127   46.6 ±4.6 418   324.7 ±17.3 156   419.4 ±36.1
2010-2012 127   46.7 ±4.6 410   327.1 ±17.5 147   394.5 ±35.1
2009-2011 130   47.3 ±4.6 362   297.1 ±17.0 138   372.6 ±34.3
2008-2010 130   47.1 ±4.6 352   297.1 ±17.3 137   369.4 ±34.1
2007-2009 132   47.3 ±4.6 346   301.8 ±17.7 145   391.6 ±35.1
2006-2008 131   46.7 ±4.6 343   308.6 ±18.1 153   413.7 ±36.0
2005-2007 135   47.8 ±4.6 335   309.7 ±18.4 157   426.9 ±36.6
2004-2006 140   49.5 ±4.7 330   313.4 ±18.8 157   432.6 ±37.0
2003-2005 142   50.3 ±4.7 326   317.3 ±19.1 155   431.5 ±37.2
2002-2004 148   52.5 ±4.8 340   338.0 ±19.9 152   429.9 ±37.4
2001-2003 141   50.5 ±4.7 335   339.9 ±20.2 155   442.8 ±38.2
2000-2002 139   50.1 ±4.8 336   347.3 ±20.5 157   456.1 ±39.0
1999-2001 132   47.7 ±4.7 326   342.5 ±20.6 158   469.2 ±39.8
1998-2000 135   49.2 ±4.7 327   348.7 ±20.9 162   488.0 ±40.9
1997-1999 136   49.5 ±4.8 331   356.0 ±21.2 154   475.0 ±40.9
1996-1998 131   47.6 ±4.7 334   363.1 ±21.5 150   474.9 ±41.4
1995-1997 126   45.9 ±4.6 336   368.8 ±21.8 140   461.1 ±41.6
1994-1996 116   42.8 ±4.4 324   359.7 ±21.6 138   474.4 ±43.1
1993-1995 113   41.8 ±4.4 318   355.5 ±21.6 135   486.4 ±44.6
1992-1994 109   40.6 ±4.4 309   349.1 ±21.5 134   505.9 ±46.4
1991-1993 115   43.2 ±4.5 317   361.7 ±22.0 133   528.2 ±48.5
1990-1992 114   43.0 ±4.5 325   374.3 ±22.4 128   535.9 ±50.2
1989-1991 117   44.7 ±4.6 321   373.7 ±22.5 114   505.0 ±50.2
1988-1990 111   42.5 ±4.5 317   372.1 ±22.6 98   456.6 ±49.3
1987-1989 110   42.2 ±4.5 315   375.0 ±22.8 99   482.1 ±51.7
1986-1988 103   39.3 ±4.4 300   361.9 ±22.6 88   449.8 ±51.4
1985-1987 99   37.9 ±4.3 287   350.8 ±22.5 87   466.1 ±53.6
             

 

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