All studies were considered for downgrade if they exhibited poor design, insufficient number of subjects (N < 10), or other methodological flaws. Studies not meeting the above criteria, including case reports and expert opinion papers, were excluded entirely. Adapted with permission from the The Oxford Levels of Evidence 2 developed by the Oxford Centre for Evidence-Based Medicine (https://www.cebm.net/index.aspx?o=5653) and from Ishii 2015. 30
Due to the intractability, at times, in the treatment of PTSD, clinicians and researchers continue to explore different options for treatment. This article discusses the renewed interest in hallucinogens for such treatment.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.