Fig. 2
Relationships between product price (normalised to advertised CBD concentration) and relative deviation from advertised CBD concentrations for each product type. Correlation coefficients are as follows: all products (R=−.48, p < .001), aqueous tinctures (R = −.26; p = .39), oils (RS = −0.10; p = .60), e-liquids (RS = 0.11; p = .76) and drinks (R = −.24; p = .47); R = Pearson correlation; RS = Spearman’s rank