Which of the following is an example of a cohort study?
A) Compare lifetime exposure to coal plant emissions between individuals with lung cancer and individuals without lung cancer in the general population.
B) Measure lifetime exposure to coal plant emissions and the incidence of lung cancer in a group of individuals living in a small town.
C) Question all people in an area about their exposure to coal plant emissions and whether they have any lung diseases.
D) Examine the incidence of lung disease in all females over the age of 50 in a city that is close to a coal plant.

Question

Quizplus · Accepted Answer

A cohort study follows a group of individuals over time to observe the development of a disease or health outcome. Option B involves measuring exposure to a potential risk factor (coal plant emissions) and following a group of individuals over time to observe the incidence of lung cancer. Option A is a case-control study, option C is a cross-sectional study, and option D is a population-based study, but not necessarily a cohort study as it does not involve following individuals over time.

Which of the Following Is an Example of a Cohort