## Chapter 1. Prenatal Survey

Table 1.4. Percent of pregnant women having each category of prepregnancy body mass index (BMI) by selected demographics1, 2

Infant Feeding Practices Study II

N <18.5 18.5 - 25.0 25.1 - 29.9 30.0 - 39.9 40.0 or more Total (%)
ALL 4,826 5.3 47.5 23.6 18.6 5.1 100
Age
18-24 1,353 8.5 50.1 22.8 15.7 3.0 100
25-29 1,558 4.9 47.7 22.7 19.6 5.1 100
30-34 1,203 3.7 46.0 24.3 19.2 6.9 100
35+ 700 2.7 44.6 25.9 21.0 5.9 100
Parity
Primiparous 1,499 6.0 51.7 20.9 17.4 3.9 100
Multiparous 3,154 4.9 45.2 25.0 19.4 5.6 100
Education
HS or less 1,043 5.9 44.4 22.6 21.2 5.8 100
Some college 1,732 4.6 43.6 25.0 21.0 5.8 100
College graduate 1,448 3.7 52.8 23.7 16.1 3.8 100
Income (% of poverty)
< 185% 2,168 6.3 43.9 24.1 19.9 5.9 100
185- < 350% 1,657 4.8 48.6 23.3 18.3 4.9 100
>=350% 1,001 4.0 53.4 23.0 16.1 3.5 100
WIC Participant
No 3,208 4.6 50.2 23.0 17.9 4.4 100
Yes 1,610 6.8 42.2 24.7 19.8 6.5 100
Race
White 3,815 5.2 47.2 23.4 19.3 4.9 100
Black 291 3.4 40.2 31.3 17.2 7.9 100
Hispanic 327 4.9 47.7 25.7 17.1 4.6 100
Region
Northeast 815 4.7 50.9 21.6 18.5 4.3 100
Midwest 1,390 5.3 46.6 23.2 18.8 6.0 100
South 1,675 5.7 45.7 25.6 18.1 4.8 100
West 946 5.0 48.9 22.3 19.0 4.8 100

1Table is based on variables: P7, P8FT, P8IN

2BMI is calculated as the weight (P7) divided by height (P8FT & P8IN) squared after converting measurements to metric and using kg/m2