Depression Ratings Reanalyzed According to Patient Guess On day 14, the final day of patient assessments, patients were asked the following questions: “What treatment do you think you received?” MADRS scores were reanalyzed according to their guess, irrespective of their true group allocation. Mean and standard deviation (SD) MADRS scores are shown using the alternate grouping: “Ketamine”, n=17; “Placebo”, n=10; “I don’t know”, n=11.