European journal of pain : EJP
-
Review Meta Analysis
Long-term observational studies with cannabis-based medicines for chronic non-cancer pain: A systematic review and meta-analysis of effectiveness and safety.
This systematic review evaluated the effectiveness, tolerability and safety of cannabis-based medicines (CbMs) for chronic non-cancer pain (CNCP) in long-term observational studies. ⋯ There is very low quality evidence for the long-term effectiveness (pain, sleep, mood, health-related quality of life), tolerability and safety of medical cannabis for chronic non-cancer pain (CNCP) according to reports of prospective observational studies. Predefined criteria of a large magnitude of effect size in these types of studies were not met. Nevertheless, long-term medical cannabis therapy can be considered in some carefully selected and monitored patients with CNCP.