Doping in Two Elite Athletics Competitions Assessed by Randomized-Response Surveys

Rolf Ulrich, Harrison G. Pope, Léa Cléret, Andrea Petróczi, T. Nepusz, Jay Schaffer, Gen Kanayama, R. Dawn Comstock, Perikles Simon

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43 Citations (Scopus)

Abstract

Background: Doping in sports compromises fair play and endangers health. To deter doping among elite athletes, the World Anti-Doping Agency (WADA) oversees testing of several hundred thousand athletic blood and urine samples annually, of which 1–2% test positive. Measures using the Athlete Biological Passport suggest a higher mean prevalence of about 14% positive tests. Biological testing, however, likely fails to detect many cutting-edge doping techniques, and thus the true prevalence of doping remains unknown. Methods: We surveyed 2167 athletes at two sporting events: the 13th International Association of Athletics Federations Word Championships in Athletics (WCA) in Daegu, South Korea in August 2011 and the 12th Quadrennial Pan-Arab Games (PAG) in Doha, Qatar in December 2011. To estimate the prevalence of doping, we utilized a “randomized response technique,” which guarantees anonymity for individuals when answering a sensitive question. We also administered a control question at PAG assessing past-year use of supplements. Results: The estimated prevalence of past-year doping was 43.6% (95% confidence interval 39.4–47.9) at WCA and 57.1% (52.4–61.8) at PAG. The estimated prevalence of past-year supplement use at PAG was 70.1% (65.6–74.7%). Sensitivity analyses, assessing the robustness of these estimates under numerous hypothetical scenarios of intentional or unintentional noncompliance by respondents, suggested that we were unlikely to have overestimated the true prevalence of doping. Conclusions: Doping appears remarkably widespread among elite athletes, and remains largely unchecked despite current biological testing. The survey technique presented here will allow future investigators to generate continued reference estimates of the prevalence of doping.

Original languageEnglish
Pages (from-to)211-219
Number of pages9
JournalSports Medicine
Volume48
Issue number1
DOIs
Publication statusPublished - Jan 1 2018

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ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Ulrich, R., Pope, H. G., Cléret, L., Petróczi, A., Nepusz, T., Schaffer, J., Kanayama, G., Comstock, R. D., & Simon, P. (2018). Doping in Two Elite Athletics Competitions Assessed by Randomized-Response Surveys. Sports Medicine, 48(1), 211-219. https://doi.org/10.1007/s40279-017-0765-4