Adjusted odds ratios (OR) for selected pregnancy outcomes according to severity of maternal obesity.

*Compared to reference women. Adjusted for age, parity, height, smoking, alcohol consumption, physical exercise, social group, and for postpartum retention also time of interview in weeks after birth.†Test for trend, only included adjusted odds ratios in the 3 obesity groups.§Only planned pregnancies (n = 4278).$Only available in women with a 2nd pregnancy interview (n = 4564).‡Only available in women with an interview 6 m after birth, (n = 3627 for weight retention/loss, n = 3865 for failure to initiate breastfeeding, n = 3000 for failure to continue (only women who initiated)).