Fig. 1

Month-to-month relative frequencies for expressions belonging to the themes (i) drug use, (ii) treatment and access, and (iii) withdrawal. Relative frequencies for the term 'covid' are provided for comparison
Month-to-month relative frequencies for expressions belonging to the themes (i) drug use, (ii) treatment and access, and (iii) withdrawal. Relative frequencies for the term 'covid' are provided for comparison