Odds ratio (OR) of diabetes at 21 years post-partum by the IOM categories of gestational weight gain (N = 3386).

Model 1- adjusted for IOM categories and maternal age at first clinic visit. Model 2- adjusted for model 1 plus maternal smoking during pregnancy, parity, maternal educational attainment, race, TV watching and exercise before pregnancy. Model 3- adjusted for model 2 plus breastfeeding duration. Model 4- adjusted for model 3 plus BMI at 21 years. Model 5- model 3 results are repeated stratifying by the maternal pre-pregnancy BMI≥25 kg/m2 and BMI<25 kg/m2. Model 6- model 3 is repeated further adjusting for maternal BMI at 21 years.