# Physical and cognitive doping in university students using the unrelated question model (UQM): Assessing the influence of the probability of receiving the sensitive question on prevalence estimation

Dietz, Pavel; Quermann, Anne; van Poppel, Mireille Nicoline Maria; Striegel, Heiko; Schröter, Hannes; Ulrich, Rolf; Simon, Perikles

Abstract:
Study objectives: In order to increase the value of randomized response techniques (RRTs) as tools for studying sensitive issues, the present study investigated whether the prevalence estimate for a sensitive item π̂$_{s}$ assessed with the unrelated questionnaire method (UQM) is influenced by changing the probability of receiving the sensitive question p.
Material and methods: A short paper-and-pencil questionnaire was distributed to 1.243 university students assessing the 12-month prevalence of physical and cognitive doping using two versions of the UQM with different probabilities for receiving the sensitive question (p ≈ 1/3 and p ≈ 2/3). Likelihood ratio tests were used to assess whether the prevalence estimates for physical and cognitive doping differed significantly between p ≈ 1/3 and p ≈ 2/3. The order of questions (physical doping and cognitive doping) as well as the probability of receiving the sensitive question (p ≈ 1/3 or p ≈ 2/3) were counterbalanced across participants. Statistical power analyses were performed to determine sample size.
Results: The prevalence estimate for physical doping with p ≈ 1/3 was 22.5% (95 ... mehr

 Zugehörige Institution(en) am KIT Institut für Sport und Sportwissenschaft (IfSS) Publikationstyp Zeitschriftenaufsatz Jahr 2018 Sprache Englisch Identifikator ISSN: 1932-6203 URN: urn:nbn:de:swb:90-831059 KITopen ID: 1000083105 Erschienen in PLoS one Band 13 Heft 5 Seiten e0197270 Vorab online veröffentlicht am 15.05.2018
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