That is sketchy, because the whole point about a placebo is that you think you got the real thing, or you think you might have gotten the real thing, and if you're told you got a placebo, that tends to undermine the placebo effect. If you're just told you're given a sugar pill, well, then the impact of, well, anyway. This is, that right over there is definitely bad practice. So let's keep going here. Before taking the pills, and a day afterwards, the patients were asked to fill out questionnaires regarding their condition. Then the doctors analyzed the overall changes in questionnaires for each group and compared them. All right, so first of all, what type of study is this?