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Consecutive patients who attend the clinic with high blood pressure are randomly assigned to an experimental treatment or a placebo. they are followed for 90

Consecutive patients who attend the clinic with high blood pressure are randomly assigned to an experimental treatment or a placebo. they are followed for 90 days to determine the change in blood pressure. What type of study is this?

a)randomized experiment

b)case control study

c)cohort study

d) cross-sectional study

e) observational study

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