Question

Researchers are planning to conduct a case-control study of the association between an occupational exposure and a health outcome. The researchers plan to study exposed workers from one factory and compare them with unexposed retirees who have never worked in a factory. A reviewer of the research proposal is worried about selection bias and in particular about the possibility of the healthy worker effect. Which of the following best represents the reviewer's concern?

a. Retirees should not be compared to factory workers because factory workers are under more stress than retirees

b.Retirees should not be compared to factory workers because factory workers' incomes differ from those of retirees

c.Retirees should not be compared to factory workers because factory workers are likely to need to maintain a certain level of health in order to work in a factory while retirees would not necessarily be as healthy

d.Retirees should not be compared to factory workers because factory workers likely live in a different city than the retirees

Answer 1

option C is correct

c.Retirees should not be compared to factory workers because factory workers are likely to need to maintain a certain level of health in order to work in a factory while retirees would not necessarily be as healthy