Mathematics, 18.10.2020 14:01 sweetiezylp8umho

What are the disadvantages of a cohort study? a. they are the most powerful of the observational studies when they are practical to do

b. they are expensive

c. they are time consuming and many participants drop out

d. participants are required to recall information and are not always truthful

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What are the disadvantages of a cohort study? a. they are the most powerful of the observational st...