Fig. 4From: Recreational Athletes’ Use of Performance-Enhancing Substances: Results from the First European Randomized Response Technique SurveyEstimates for the use over-the-counter medications performance enhancement (left), use of medication for training or for competition for purposes other than performance enhancement (center) and for the use prohibited substances or methods to enhance image (right). INC = Instruction Non-Compliance, OTC = Over-The-Counter, PE = Performance EnhancementBack to article page