Figure 1From: Arsenic is associated with reduced effect of folic acid in myelomeningocele prevention: a case control study in BangladeshThe predicted odds ratio of periconceptional folic acid use and myelomeningocele from the interaction model at various distributions of inorganic arsenic concentration in drinking water. Average (mean) values of parental age, child age, child sex and home birth were used to estimate odds ratios.Back to article page