Figure 1

Individual level data for the Mother's (fasted group) showing unmetabolised folic acid nM/L plotted against plasma total folate nM/l. The box plots on the x and y axis respectively indicate the univariate distribution of plasma folate and plasma unmetabolised folic acid. In each box plot the line across the box indicates the median point, the whiskers indicate the range of the data, and the 25 and 75% centiles are indicated by the box itself.