The answer is false.
There is no worry in the repeated-measures trial that the participants in one treatment may differ in some ways from the participants in the other treatments. To ensure that there are no differences between the patients before getting the treatments, the repeated measures study either uses the same group of people for both treatments or matches the subjects in two groups on a number of variables. Therefore, it is unimportant to worry that the individuals in one treatment may differ from those in the other treatments in a repeated-measures study.
Which is a serious concern with a repeated-measures study?
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