STUDY | COUNTRY | FUNDING SOURCE | STUDY DESIGN | QUALITY ASSESSMENT* |
---|---|---|---|---|
Abrams et al,15 2007 | US | Center for Medicinal Cannabis Research | Randomized, double-blind trial | 3 (High) |
Corey-Bloom et al,11 2012 | US | Center for Medicinal Cannabis Research | Randomized, double-blind, placebo-controlled, crossover trial | 2 (Low) |
Ellis et al,13 2009 | US | Center for Medicinal Cannabis Research | Randomized, double-blind, placebo-controlled, crossover trial | 3 (High) |
Ware et al,12 2010 | Canada | Canadian Institutes of Health Research | Randomized, double-blind, placebo-controlled, crossover trial | 3 (High) |
Wilsey et al,9 2013 | US | National Institutes of Health | Randomized, double-blind, placebo-controlled, crossover trial | 3 (High) |
Wilsey et al,14 2008 | US | Center for Medicinal Cannabis Research | Randomized, double-blind, placebo-controlled, crossover trial | 3 (High) |
CNCP—chronic noncancer pain, US—United States.
↵* Based on the Jadad scale.8