The levels of use of opioids, amphetamines and cocaine and associated levels of harm: summary of scientific evidence


This report presents the findings of a literature review to identify the most frequently occurring patterns of use and their relation to harm in users of opioids, powder and crack cocaine, and meth/amphetamine. The behavioural factors that were studied included: frequency of use, duration of use, routes of administration, drug type, dose, severity of dependence, and (the presence of) polydrug use.

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Table of contents

  • Summary
  • Contents
  • Introduction: context and rationale
  • Methodology
  • Theoretical framework
  • Results of the literature review
  • Discussion
  • Conclusions
  • References
  • List of tables
  • List of figures