Table 6
Number of Infant Deaths, Live Births and Infant Death Rates
by Selected Characteristics of Newborn and of Mother
for Michigan Residents, 2015
(Continued)


Characteristics of Newborn Infant
Deaths
Live
Births
Infant Death
Rate
Sex of Infant 765 113,211 6.8  ±0.5
  Male 428 57,708 7.4  ±0.7
  Female 334 55,499 6.0  ±0.6
Birthweight 765 113,211 6.8  ±0.5
  1,499 Grams or Less 394 1,735 227.1  ±20.0
  1,500 - 2,499 Grams 133 7,876 16.9  ±2.8
  2,500 Grams or More 235 103,552 2.3  ±0.3
Plurality 765 113,211 6.8  ±0.5
  Single Birth 647 109,001 5.9  ±0.5
  Multiple Birth 111 4,204 26.4  ±4.8
Characteristics of Mother Infant
Deaths
Live
Births
Infant Death
Rate
Age of Mother 765 113,211 6.8  ±0.5
  < 20 65 6,412 10.1  ±2.5
  20 - 29 438 60,831 7.2  ±0.7
  30 - 39 233 43,292 5.4  ±0.7
  40 + 22 2,673 8.2  ±3.4
Marital Status 765 113,211 6.8  ±0.5
  Married 279 64,825 4.3  ±0.5
  Unmarried 479 48,384 9.9  ±0.9
Level of Prenatal Care 765 113,211 6.8  ±0.5
  Adequate 357 76,051 4.7  ±0.5
  Intermediate 224 26,506 8.5  ±1.1
  Inadequate 177 10,639 16.6  ±2.4
Exposure to Tobacco Infant
Deaths
Live
Births
Infant Death
Rate
Smoked During Pregnancy 765 113,211 6.8  ±0.5
  No 574 94,767 6.1  ±0.5
  Yes 191 18,444 10.4  ±1.5
Secondhand Smoke During Pregnancy 765 113,211 6.8  ±0.5
  No 540 92,321 5.8  ±0.5
  Yes 165 16,037 10.3  ±1.6
Smoked or Secondhand Smoke During Pregnancy 765 113,211 6.8  ±0.5
  No 465 83,977 5.5  ±0.5
  Yes 252 25,208 10.0  ±1.2
History of smoking 765 113,211 6.8  ±0.5
  No 534 90,387 5.9  ±0.5
  Yes 210 22,150 9.5  ±1.3


Note: Rates are per 1,000 live births. 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. Records with selected characteristics unknown are included in total only.  Level of prenatal care is according to the Kessner Index which is a classification of prenatal care based on the month of pregnancy in which prenatal care began, the number of prenatal visits and the length of pregnancy (i.e. for shorter pregnancies, fewer prenatal visits constitute adequate care.)
Source: 2015 Michigan Resident Birth-Death Matched File, Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services