Fig. 4.

Ecstasy crystal market trends, EDRS samples 2014-2022. A) Last reported price per gram. B) Percent reporting perceived availability as ‘easy’ or ‘very easy’. C) Percent reporting perceived purity as ‘high’.

Notes. In each figure the relationship between year and outcome is modelled using a generalised additive model. A) The distribution of individual price observations is summarised as a smoothed density plot; the grey dots represent individual observations; the red line indicates the median price. B & C) The dots represent the mean percent and bars represent 95% confidence intervals.