anonymous
  • anonymous
Reynaldo is reviewing a study on the effectiveness of a new drug-free remedy for depression. In the study, a group of participants was given a natural supplement for a period of six weeks. They rated their mood both before and after treatment. Two-thirds of the group reported a marked improvement after the trial. What change in this study would do the most to increase Reynaldo's confidence that sound scientific practices were followed?
Biology
katieb
  • katieb
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anonymous
  • anonymous
HANDING OUT A PLACEBO even better: cross groups. ie give the placebo to one group and the supplement to another, then switch groups.
blues
  • blues
Or a double blind study would be good too: one in which the clinicians interacting with patients don't know which group gets the placebo. Double blind clinical trials are the "gold standard" of statistical medicine.

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