The article we discuss is MA Raskind et al. Trial of Prazosin for Post-Traumatic Stress Disorder in Military Veterans. New England Journal of Medicine 2018; 378(6):507-517

For an  example of an earlier study that DID find benefit of prazosin for PTSD, check out Raskind, MA et al. A Trial of Prazosin for Combat Trauma PTSD with Nightmares in Active-Duty Soldiers Returned from Iraq and Afghanistan. Am J Psychiatry 2013; 170: 1003-1010.

Recent meta-analyses of the efficacy of prazosin for PTSD can be found here and here

A brief review on the ethical principles of equipoise in research.