Fig. 3

Association (estimates and 95% confidence intervals) of each maternal serum AP with childhood intelligence quotient in total children, when the other APs were fixed at their 25th, 50th, and 75th percentiles. All models were adjusted for maternal age at delivery, maternal prepregnancy BMI, passive smoking, maternal education, household income, folic acid supplementation, breastfeeding duration, child age, and child sex