Population | Patients with any type of cancer, including haematological and solid tumours | Patients undergoing surgery, cannabis taken recreationally and cannabis in addiction, animal studies |
Intervention | Multiple doses of cannabinoids via any route, for pain cancer-related management (studies where only the minority of the exposed group received cannabis and cannabinoids were excluded) | Single-dose studies |
Comparison/control | Any type of comparator, including placebo | No comparator/control group |
Outcome | Pain as the primary outcome | Pain not the primary outcome |
Study design | Randomised controlled trials | Cohort studies, prospective and retrospective observational studies, case studies and database analysis |