During the course of the study, the test persons were required to inhale an active substance to widen the respiratory tract, three times a day. The containers were weighed regularly to determine actual consumption. But for some test subjects, the inhalator was additionally fitted with a monitoring device, which registered when the inhalator was actually used. After the conclusion of the yearlong study, the data from this monitoring device was evaluated and compared with the weight readings. This is when it became apparent that some of the test subjects had cheated.
Clinical studies are the basis on which medication or methods of treatment are approved.
Thus, the unreliability of test persons may have grave consequences.