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Table 1 Descriptive statistics of low birthweight and infant deaths, Michigan 2004–2006.

From: Geographic analysis of low birthweight and infant mortality in Michigan using automated zoning methodology

  All Births Low
Birthweight
Deaths Low
Birthweight Incidence
Infant Mortality
  (n = 370587) (n = 23761) (n = 2972)   
  No. (%) No. (%) No. (%) Rate(3) Rate(4)
Infant Sex         
   Male 189898 51.2 11307 47.6 1637 55.42 6.0 8.6
   Female 180676 48.7 12445 52.4 1317 44.58 6.9 7.3
   Missing(1) 13   9   18    
Mother's Race         
   White 287624 78.2 14695 62.3 1757 59.7 5.1 6.1
   Black 64986 17.7 7928 33.6 1105 37.6 12.2 17.0
   American Indian 2073 0.6 109 0.5 23 0.8 5.3 11.1
   Other(2) 13259 3.6 858 3.6 58 1.9 1.9 1.1
   Missing 2645   171   29    
Mother's Education         
   Less than High School 63227 18.5 5722 26.1 679 24.5 9.1 10.7
   High School 113708 33.4 8092 36.9 1090 39.4 7.1 9.6
   College 163850 48.1 8131 37.1 999 36.1 5.0 6.1
   Missing 29802   1816   204    
  1. (1) Data variable missing from dataset
  2. (2) American Indian, Asian and Hawaiian and Pacific Islanders
  3. (3) Number of low birthweight births per 100 live births
  4. (4) Number of infant deaths per 1,000 live births