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Review Question - QID 103901

Observational Studies Crossover Design Participants act as own controls  QID: 103901 (M1.ST.14.84)
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QID 103901 (Type "103901" in App Search)
A study investigating the use of adalimumab for the relief of peripheral arthropathy in patients with psoriatic arthritis was conducted. The study utilizes a crossover design in which half of the study participants are given adalimumab for a month while the other half takes placebo. After a 2 week washout period in which no one takes any adalimumab, the group that was originally on adalimumab is given placebo for a month while the group that was originally taking placebo is given adalimumab for a month. Pain in all affected joints is assessed clinically by follow-up visits every two weeks for the duration of the study. Which of the following is true about cross-over study designs?
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