Adriëtte Oostvogels

6 mothers had higher BMIs from birth onwards compared to girls of normal weight mothers. Girls of obese mothers had higher BMIs than girls of overweight mothers from 4 years onwards. Girls’ BMI seemed more sensitive to maternal overweight / obesity compared to boys’ BMI (p for interaction<0.05). Boys (N=1713) Girls (N=1795) Normal weight (N=1361) Overweight (N=254) Obese (N=98) Normal weight (N=1405) Overweight (N=285) Obese (N=105) Maternal age (years) 31.9 (4.6) 31.9 (4.8) 30.8 (5.6) 31.8 (4.4) 31.5 (5.0) 31.5 (5.0) Maternal height (cm) 169.8 (7.1) 167.6 (8.0) 165.8 (6.2) 169.8 (6.7) 168.3 (7.1) 166.1 (7.4) Maternal BMI (kg/m 2 ) 21.7 (1.6) 27.0 (1.4) 34.4 (4.2) 21.6 (1.7) 26.9 (1.4) 33.5 (3.9) Maternal education (%) 0-4 years 7.9 18.5 27.6 6.6 13.7 24.8 5-9 years 26.3 37.0 43.9 26.6 41.1 46.7 ≥10 years 65.8 44.5 28.6 66.8 45.3 28.6 Maternal ethnicity (%) Dutch 69.1 59.1 49.0 69.3 56.8 47.6 Surinamese 3.4 5.1 11.2 3.4 5.6 11.4 Moroccan 2.9 5.1 6.1 2.8 5.3 8.6 Turkish 3.7 9.8 13.3 3.1 9.8 9.5 Others 20.9 20.9 20.4 21.4 22.5 22.9 Parity (%) Nulliparous 61.4 41.7 36.7 59.7 52.6 47.6 Multiparous 38.6 58.3 63.3 40.3 47.4 52.4 Diabetes during pregnancy (%) No 98.9 95.3 87.8 98.9 97.9 92.4 Yes 1.1 4.7 12.2 1.1 2.1 7.6 Hypertension during pregnancy (%) No 86.3 76.4 56.1 87.1 71.9 58.1 Yes 13.7 23.6 43.9 12.9 28.1 41.9 Smoking during pregnancy (%) None 91.8 89.0 92.9 93.0 91.2 82.9 < 5 cigarettes/day 5.1 5.9 2.0 4.0 3.9 9.5 > 5 cigarettes/day 3.2 5.1 5.1 3.1 4.9 7.6 Table 1. Characteristics of the study population (n=3508) 155 pBMI and offspring’s growth patterns