Safety Net Study Population by Body Mass Index category.

aDifferences in age, gravidity and parity are significant between underweight BMI females and each BMI category; and differences in age, gravidity and parity are significant between normal BMI females and all other BMI categories by one-way ANOVA.
bThe proportion of white and black women significantly decreases as the BMI category increases from normal, p for trend<0.001. Hispanic women are evenly distributed among the BMI categories from normal through obese class II.
cPercentages by BMI category are per race category; percentage of total for each race is per total population.