Figure 3From: Effect of iron content on the tolerability of prenatal multivitamins in pregnancy Rates of adherence between 2 prenatal multivitamin groups, represented as Kaplan-Meier survival curves and based on the proportion of subjects who commenced and continued supplementation with assigned multivitamin (at any percentage of pill intake). (Black solid line) 35 mg iron group, n = 57. (Black broken line) 60 mg iron group, n = 47.Back to article page