A clinical trial is run to assess the efficacy of a new drug to reduce high bloo

Question

A clinical trial is run to assess the efficacy of a new drug to reduce high blood pressure. Patients with a diagnosis of hypertension (high blood pressure) are recruited to participate in the trial and randomized to receive either the new drug or placebo. Participants take the assigned drug for 12 weeks and their blood pressure status is recorded. At the end of the trial, participants are classified as still having hypertension or not. The data are shown below.

                      number randomized                  # of free hypertension at 12 weeks

placebo                   50                                                    6

new drug                 50                                                     14

what is the prevalence of hypertension at the start of the trial?

_______%

what is the prevalence of hypertension at the end of the trial?

Prevalence 2005= ________

estimate the relative risk comparing the proportions who are free of hypertension at 12 weeks between the groups?

RR= ______

Explanation / Answer

A
100%

B
20%

C
Placebo = 88%

New Drug = 76%

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