Low Birthweight, Neonatal, Postneonatal and Infant Mortality Rates
Calhoun County Residents, 1989-2009

Three-Year Moving Averages

Year Low Birthweight
Mortality Rate
Neonatal
Mortality Rate
Postneonatal
Mortality Rate
Infant
Mortality Rate
1989-1991 6.6  ±2.0      6.9  ±2.0      4.3  ±1.6      11.2  ±2.6     
1990-1992 5.3  ±1.8      5.6  ±1.8      4.3  ±1.6      9.9  ±2.4     
1991-1993 5.7  ±1.9      5.5  ±1.9      5.4  ±1.8      10.9  ±2.6     
1992-1994 5.0  ±1.8      5.4  ±1.9      5.0  ±1.8      10.4  ±2.6     
1993-1995 5.2  ±1.8      5.7  ±1.9      4.0  ±1.6      9.7  ±2.5     
1994-1996 3.9  ±1.6      3.2  ±1.5      3.3  ±1.5      6.5  ±2.1     
1995-1997 4.1  ±1.7      2.9  ±1.4      4.3  ±1.7      7.2  ±2.2     
1996-1998 4.5  ±1.8      3.1  ±1.5      3.8  ±1.6      6.9  ±2.2     
1997-1999 4.5  ±1.8      4.0  ±1.7      4.0  ±1.7      8.0  ±2.3     
1998-2000 5.4  ±1.9      5.2  ±1.9      2.3  ±1.3      7.5  ±2.3     
1999-2001 6.9  ±2.2      6.8  ±2.1      3.4  ±1.5      10.1  ±2.6     
2000-2002 7.5  ±2.3      6.9  ±2.2      3.0  ±1.4      10.0  ±2.6     
2001-2003 6.8  ±2.1      5.8  ±2.0      4.2  ±1.7      10.0  ±2.6     
2002-2004 5.7  ±2.0      5.0  ±1.8      3.7  ±1.6      8.7  ±2.4     
2003-2005 5.3  ±1.9      5.5  ±1.9      3.7  ±1.6      9.2  ±2.5     
2004-2006 6.0  ±2.0      6.3  ±2.1      3.3  ±1.5      9.6  ±2.6     
2005-2007 7.0  ±2.2      7.1  ±2.2      4.1  ±1.7      11.2  ±2.8     
2006-2008 7.5  ±2.3      7.6  ±2.3      3.1  ±1.5      10.7  ±2.7     
2007-2009 7.4  ±2.3      8.1  ±2.4      3.3  ±1.5      11.5  ±2.8     


Five-Year Moving Averages

Year Low Birthweight
Mortality Rate
Neonatal
Mortality Rate
Postneonatal
Mortality Rate
Infant
Mortality Rate
1989-1993 6.4  ±1.5      6.6  ±1.5      5.0  ±1.3      11.5  ±2.0     
1990-1994 5.4  ±1.4      5.9  ±1.5      4.4  ±1.3      10.3  ±1.9     
1991-1995 4.9  ±1.4      5.0  ±1.4      4.4  ±1.3      9.4  ±1.9     
1992-1996 4.7  ±1.4      4.3  ±1.3      4.4  ±1.3      8.8  ±1.9     
1993-1997 4.8  ±1.4      4.3  ±1.3      4.4  ±1.3      8.8  ±1.9     
1994-1998 4.2  ±1.3      3.5  ±1.2      3.4  ±1.2      6.9  ±1.7     
1995-1999 4.4  ±1.4      3.5  ±1.2      3.8  ±1.2      7.2  ±1.7     
1996-2000 4.9  ±1.4      4.0  ±1.3      3.5  ±1.2      7.5  ±1.8     
1997-2001 6.0  ±1.6      5.7  ±1.5      3.4  ±1.2      9.1  ±1.9     
1998-2002 6.4  ±1.6      5.9  ±1.6      3.0  ±1.1      8.9  ±1.9     
1999-2003 6.3  ±1.6      5.6  ±1.5      3.7  ±1.2      9.3  ±1.9     
2000-2004 6.7  ±1.6      6.3  ±1.6      3.3  ±1.2      9.6  ±2.0     
2001-2005 6.4  ±1.6      6.1  ±1.6      3.8  ±1.2      9.9  ±2.0     
2002-2006 5.7  ±1.5      5.4  ±1.5      3.7  ±1.2      9.0  ±1.9     
2003-2007 6.4  ±1.6      6.4  ±1.6      3.9  ±1.3      10.3  ±2.0     
2004-2008 6.7  ±1.7      7.2  ±1.7      3.1  ±1.1      10.3  ±2.1     
2005-2009 6.7  ±1.7      7.3  ±1.7      3.4  ±1.2      10.7  ±2.1     

 

Notes:
 
Infant deaths: Deaths occurring to individuals less than 1 year of age.
Infant mortality rate: Number of resident infant deaths divided by total resident live births x 1,000.
Neontal mortality rate: Number of infant deaths that occurred within the first 27 days of life per 1,000 live births.
Postneontal mortality rate: Number of resident deaths occuring to individuals at 28-364 days of age divided by total resident live births x 1,000.
Low Birthweight mortality rate: Number of infant deaths with birthweight less than 2500 grams divided by total resident live births x 1,000.
± 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.
*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.
- A dash indicates that there were either no births or no infant deaths from this category.
   
Source: 1989 - 2009 Michigan Resident Death Files and Michigan Resident Birth Files, Vital Records and Health Statistics Section, Division for Vital Records and Health Statistics, Michigan Department of Community Health.

Date Created: 1/28/2011