Mathematics, 16.01.2020 01:31 irene003
In a clinical trial, 780 participants suffering from high blood pressure were randomly assigned to one of three groups. over a one-month period, the first group received a low dosage of an experimental drug, the second group received a high dosage of the drug, and the third group received a placebo. the diastolic blood pressure of each participant was measured at the beginning and at the end of the period and the change in blood pressure was recorded. the biggest decrease in blood pressure was for those who received the low dosage of the drug. why should the participants be blinded to which dosage they receive?
Answers: 3
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