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Vitamin intake per diet group in all studies. Boxplots show 25, 50 and 75 percentiles of intakes with whiskers at <1.5 interquartile range (IQR); black dots represent mean intake and red dots outliers >1.5 IQR; dotted lines represent the estimated average requirement (EAR) for adults (green), women (pink) and men (blue): (a) vitamin A; (b) vitamin B1; (c) vitamin B2; (d) niacin; (e) vitamin B6; (f) folate; (g) vitamin B12; (h) vitamin C; (i) vitamin D; (j) vitamin E.
