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Drug use as a “coping strategy” and its association with changes in the amount of use.
Note. The bars present percentages. The right column displays partial non-parametric Spearman rank correlation coefficients of the extent of drug use as a coping strategy with the difference in frequency (controlled for baseline frequency of substance use). Significance levels: *** p < 0.001, ** p < 0.01, * p < 0.05.
