Additional file 4 of Analyzing dietary exposure to critical nutrients on a plant-based diet using the food- and total nutrient index

Supplementary Material 4: Figure 2. Scatterplots – Associations between the Total Nutrient Index (TNI) and serum levels of Vitamin A, D and E. Scatterplots depict bivariate associations between the TNI and serum levels of Vitamin A, D and E. Based on n = 105 observations for vitamin A and vitamin D. Based on n = 107 observations for vitamin E. A significant correlation was found for vitamin D (Spearman's rho = 0.45; p =<0.001) and vitamin A (Spearman's rho = 0.21; p = 0.034), whereas the association with vitamin E was not statistically significant (Spearman's rho = -0.05; p = 0.623). OM = omnivores; LOV = lacto-ovo-vegetarians; VN = vegans.