Average Weight Gain, Number and Percent of Singleton Live Births
by Recommended Maternal Weight Gain1, and Mother's BMI2 at Start of Pregnancy,
Tables for Race, Hispanic or Middle Easterner Ancestry
Michigan Residents, 2015

Total Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
33.23,3703.21,1445.31,4244.47941.6
18.5 - 24.9
Desirable
33.144,88342.611,04051.016,77651.516,93533.3
25.0 - 29.9
Overweight
30.927,28525.93,30415.36,97821.416,88433.2
≥30.0
Obese
23.929,92628.46,15928.57,42522.816,17031.8
Total 30.0105,464100.021,647100.032,603100.050,783100.0

White Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
33.72,3263.07475.01,0144.25611.5
18.5 - 24.9
Desirable
33.734,43044.27,66351.413,21354.413,48335.0
25.0 - 29.9
Overweight
31.520,10825.82,20214.84,89420.212,93633.6
≥30.0
Obese
24.021,02327.04,28528.85,15021.211,48929.9
Total 30.577,887100.014,897100.024,271100.038,469100.0
 

Black Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
33.16543.42355.32534.71641.8
18.5 - 24.9
Desirable
32.36,31132.71,92943.42,01037.22,32725.1
25.0 - 29.9
Overweight
30.54,97325.874316.71,30324.12,89431.2
≥30.0
Obese
24.37,34038.11,53734.61,83534.03,90442.0
Total 28.819,278100.04,444100.05,401100.09,289100.0

Asian & Pacific Islander Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
30.42657.311010.41087.7453.8
18.5 - 24.9
Desirable
29.12,22661.075871.691164.954947.0
25.0 - 29.9
Overweight
26.283823.012812.130021.440534.6
≥30.0
Obese
22.13228.8635.9856.117014.5
Total 27.93,651100.01,059100.01,404100.01,169100.0
 

Native American Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
29.9162.785.64*4*
18.5 - 24.9
Desirable
33.322437.56143.07747.28529.2
25.0 - 29.9
Overweight
30.614424.12014.13622.18830.2
≥30.0
Obese
22.821335.75337.34628.211439.2
Total 28.8597100.0142100.0163100.0291100.0
 

Hispanic Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
33.51532.1542.9592.4401.3
18.5 - 24.9
Desirable
30.62,71836.892450.396239.482726.7
25.0 - 29.9
Overweight
27.52,14129.032817.972229.61,08335.0
≥30.0
Obese
21.92,38032.253028.969628.51,14837.1
Total 26.97,392100.01,836100.02,439100.03,098100.0

Middle Easterner Singleton Live Births

Initial Body Mass Index (BMI) and IOM Classification Average Weight Gain (lbs) Singleton Live Births 3 Below
Recommended
Maternal Weight
Gain
Recommended
Maternal Weight
Gain
Above
Recommended
Maternal Weight
Gain
Number Percent Number Percent Number Percent Number Percent
<18.5
 Underweight
30.71773.9796.7664.5321.7
18.5 - 24.9
Desirable
31.32,22849.171160.474450.376141.1
25.0 - 29.9
Overweight
27.21,29528.521618.442728.964234.7
≥30.0
Obese
22.983818.517114.524316.441622.5
Total 28.64,538100.01,177100.01,480100.01,851100.0

Notes: 1The Institute of Medicine (IOM) defines recommended weight gain during pregnancy according to the following table:

Institute of Medicine (IOM) Pre-pregnancy BMI Classification &
Recommended Total Weight Gain During Pregnancy
BMI Classification Weight Gain
Pounds Kilograms
Underweight 28-40 12.5-18
Desirable 25-35 11.5-16
Overweight 15-25 7.0-11.5
Obese 11-20 5-9

2This table uses BMI categories defined by the World Health Organization (1995), and recommended for application to weight gain tables by the IOM in 2009.

3Numbers are counts of singleton live births with reported pre-pregnancy BMI. Other counts are for mothers of singleton live births, with known BMI and weight gain figures.


Source:

2015 Michigan Resident Birth Files, Division for Vital Records & Health Statistics, Michigan Department of Health & Human Services.