Figure 1.
Median (25th, 75th percentile shown as error bars) iodine concentration (μg/kg) in milk-alternative drinks in the UK in comparison to all-season conventional (344 μg/kg) and all-season organic cows’ milk (234 μg/kg); figures for both conventional and organic milk averaged from the median values from summer samples [from our previous publication(29)], and winter samples (from Table 2). Hatched bars represent milk-alternative drinks fortified with iodine. Error bars are not shown for hazelnut, hemp or iodine-fortified drinks as a result of the small sample size (n≤3). For information on the number of samples, statistical significance, and further details see Table 1.