Determine the incidence of a chronic disease

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In a study to determine the incidence of a chronic disease, 150 people were examined at the end of a 3-year period. Twelve cases were found, giving an incidence rate of 8%. Fifty other members of the initial cohort could not be examined; 20 of these 50 could not be examined because they died. Does this loss of subjects to follow-up represent a source of bias that may have affected the study results?

Reference no: EM132848641

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