BERLIN (Reuters) - Over 30 percent of athletes who competed at the 2011 world championships admitted to having used banned substances in the past, according to a World Anti-Doping Agency-commissioned study released on Tuesday. The researchers asked a total of 2,167 athletes whether they had used banned substances. The 2011 world athletics championships were held in Daegu, South Korea while Qatar hosted the Pan-Arab Games that year. A process of indirect questioning was used for the study titled "Doping in Two Elite Athletics Competitions Assessed by Randomized-Response Surveys" in order to guard the athletes' anonymity. Only 0.5 percent of drugs tests in Daegu were positive, while the figure was 3.6 percent at the Pan-Arab Games.

Source: The Star August 29, 2017 11:03 UTC