Published May 20, 2021 in the journal Frontiers in Public Health, this study examined 214 patients new to the Canadian Medical Cannabis Program. The goal was to collect data on efficacy and safety, and what impact cannabis had on their quality of life (QOL) over a 6 week period.
Overall, 60% of these patients reported improvement in their medical conditions. "..we found significant improvements in recurrent pain, PTSD, and sleep disorders after 6 weeks of medical cannabis treatment."
Patients that were using cannabis for arthritis and anxiety did not show significant condition improvements, but they did show QOL score improvements over 6 weeks. The most effective products used were split fairly evenly between high THC, high CBD, and balanced THC/CBD products.
The full study paper is here.