Invasive Breast Cancer Incidence by Age at Diagnosis for Females,
St. Clair County, Michigan Residents, 1985 - 2013
Year of
Diagnosis
Less than 30 30 - 39 40 - 49 Less than 50
Average
Number
Age-specific
Rate
Average
Number
Age-specific
Rate
Average
Number
Age-specific
Rate
Average
Number
Age-specific
Rate
2011-2013 1   5   53.1 ±27.7 19   155.3 ±40.4 24   48.4 ±11.1
2010-2012 1   4   44.5 ±25.1 19   153.5 ±39.5 24   46.8 ±10.8
2009-2011 1   5   53.8 ±27.1 18   136.4 ±36.8 23   45.0 ±10.5
2008-2010 1   5   44.8 ±24.3 18   135.6 ±36.3 23   42.5 ±10.1
2007-2009 1   5   49.5 ±25.0 23   169.9 ±40.0 28   51.9 ±11.0
2006-2008 -    -     4   38.0 ±21.5 27   197.7 ±42.6 31   56.1 ±11.2
2005-2007 -    -     4   30.4 ±18.8 24   171.2 ±39.5 27   48.0 ±10.3
2004-2006 -    -     3   26.3 ±17.1 21   150.8 ±37.0 24   42.0 ±9.6
2003-2005 1   5   42.2 ±21.3 21   151.2 ±37.1 27   45.6 ±9.9
2002-2004 1   7   52.0 ±23.3 21   146.9 ±36.6 27   46.4 ±10.0
2001-2003 1   7   56.2 ±24.0 20   143.9 ±36.5 28   46.8 ±10.0
2000-2002 1   6   47.3 ±21.8 20   148.4 ±37.3 27   45.5 ±9.9
1999-2001 2   9   67.5 ±25.8 21   158.8 ±38.9 31   52.8 ±10.6
1998-2000 1   7   51.6 ±22.6 23   177.6 ±41.5 31   52.4 ±10.6
1997-1999 1   6   43.7 ±20.7 20   158.3 ±39.7 27   45.9 ±9.9
1996-1998 1   3   23.0 ±15.0 20   159.5 ±40.4 23   39.9 ±9.3
1995-1997 1   5   35.6 ±18.6 17   139.3 ±38.3 22   37.8 ±9.1
1994-1996 -    -     7   48.2 ±21.6 16   135.4 ±38.5 22   38.7 ±9.2
1993-1995 1   7   50.9 ±22.3 15   135.0 ±39.2 22   39.0 ±9.3
1992-1994 1   7   48.8 ±21.9 17   152.0 ±42.2 23   41.0 ±9.6
1991-1993 1   7   49.4 ±22.2 17   160.4 ±44.1 24   41.9 ±9.7
1990-1992 1   6   45.0 ±21.3 15   149.6 ±43.4 21   38.0 ±9.3
1989-1991 1   5   40.7 ±20.5 14   142.7 ±43.4 19   34.9 ±9.0
1988-1990 1   4   27.7 ±17.2 14   149.5 ±45.4 18   32.2 ±8.7
1987-1989 -    -     4   34.0 ±19.2 14   160.6 ±48.2 18   33.9 ±9.0
1986-1988 -    -     5   40.4 ±21.1 12   145.2 ±47.1 17   31.7 ±8.7
1985-1987 -    -     6   53.3 ±24.6 12   148.4 ±48.8 18   33.9 ±9.1

 

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.

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.

* : A rate is not calculated when there are fewer than 6 events, because the width of the confidence interval would negate any usefulness for comparative purposes.
Source: Michigan Resident Cancer Incidence File. Updated with cases processed through November 30, 2015. Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services.
Last Updated: November 1, 2016