Give one example of typical bias for cohort study and explain why it creates a bias one example of typical bias for a case control study and explain why it is a bias [6 points] No more than half a page
A study aims to determine the incidence of type 2 diabetes. A cohort of 200 people age 65 years or older who were initially disease –free participated in the study. One hundred and fifty people were examined at the end of 3 years. Fifty other participants from the initial cohort could not be examined, including 11 people who had died. Does this loss of participants represent a source of bias? Justify your answer. [4 points] no more than 150 word
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