Adriëtte Oostvogels

Non-response a (ref) N=2855 Response N=3024 Mean (SD) / % Mean (SD) / % Maternal characteristics Maternal prepregnancy body mass index (kg/m 2 ) 23.2 (4.1) 22.9 (3.8)* Maternal age (years) 30.1 (5.4) 31.9 (4.6)* Maternal education (years after primary school) 8.3 (4.0) 9.8 (3.7)* Maternal ethnicity (%) p<0.05 Dutch 51.9 67.3 Turkish 5.7 3.1 Moroccan 10.2 5.3 Other Western 11.8 12.6 Other Non-Western 20.3 11.7 Child’s characteristics Gestational age at birth (days) 278.4 (12.4) 279.2 (11.8)* Birth weight (g) 3429 (551) 3473 (545)* Sex – % Boys 49.2 50.4 Supplementary Table 1. Non-response analysis of all children invited for the 5-6 years health check within the ABCD-study (N=5879) a) All children invited to participate in the age 5-6 years health check, but who did not participate. Children born to parents with diabetes or with congenital anomalies were excluded. * p<0.05 140 Chapter 5