Figure 2From: The development of socio-economic health differences in childhood: results of the Dutch longitudinal PIAMA birth cohort Development of educational differences in overweight among children at ages 3 to 8, in odds ratios (ORs) a. The development of children's overweight according to the educational level of the mother. Maternal educational level is divided into low, intermediate and high education. High maternal educational level is the reference category. ORs are presented with 95% confidence intervals. a Overweight includes obesity.Back to article page