body mass indices were calculated and used to classify women as average weight ( 90-119 percent of ideal or bmi 19.21-25.60 ) , moderately overweight ( 120-135 percent ideal or bmi 25.61-28.90 ) , and very overweight ( greater than 135 percent ideal or bmi greater than 28.91 ) prior to pregnancy .
C0005910
weight
C0497406
overweight