Journal
DRUG AND ALCOHOL DEPENDENCE
Volume 152, Issue -, Pages 73-78Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.drugalcdep.2015.04.020
Keywords
Drug policy; Legal highs; New psychoactive substances; Internet forum; Legislation
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Funding
- Swedish Council for Working Life and Social Research [FAS 2006-1523]
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Background: In recent years the recreational use of new psychoactive substances (NPS) has increased. NPS are considered a threat to public health and the main response to this threat is to make the selling and buying of these substances illegal. In Sweden, during the last 5 years, 62 new substances have been classified as narcotics but little is known of the effects of making a particular substance illegal. The aim of this work is to study how legal status influences the interest in NPS in Sweden. Methods: Forty-five thousand posts made in a Swedish Internet discussion forum (Flashback Forum) related to eight NPS (MDPV, Methylone, 4-MEC, 4-HO-MET, MXE, 6-APB, AH-7921, and 3-MMC) were used to derive time-dependent measures of interest in these substances. Intervention analyses were used to investigate the effects of legal status on the forum interest. Results: For all eight substances the activity on the forum (measured as number of posts per day) showed a drastic decrease around the time of classification. The statistical analysis showed that in seven of eight cases, the drop in activity could be accounted for by the legal status of the substances. Conclusions: The legal status of the substances was shown to have a substantial effect on the interest in the substances. The novel measure used to trace the interest in particular NPS could be a useful tool to follow trends in substance use in almost real-time. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
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