cohort study FMS GH

True or False? A cohort study is designed to observe outcomes on a specific group of individuals (a cohort), based on their exposure to a particular factor

• true

• false

What differentiates a cohort study from a case-control study?

• a) The timing of the study

• b) The size of the study

• c) The sequence of events

• d) The focus on specific outcomes

True or False? Cohorts are always determined based on their disease status.

• true

• false

Which of the following is NOT a typical characteristic of a retrospective cohort study?

• a) It examines past exposures

• b) It is usually quicker and cheaper than a prospective cohort study

• c) Outcomes have already occurred at the start of the study

• d) It follows participants into the future to observe outcomes

In a cohort study, the measure of association typically calculated is:

• a) Odds ratio

• b) Risk difference

• c) Relative risk

• d) Both b and c

True or False? Cohort studies can be used to establish causation.

• True

• False

Which of the following is a common limitation of cohort studies?

• a) Recall bias

• b) Selection bias

• c) Reverse causation

• d) All of the above

In which type of cohort study are participants chosen based on their exposure status?

• a) Retrospective

• b) Case-control

• c) Prospective

• d) Non-exposure

True or False? Loss to follow-up is a concern in prospective cohort studies but not in retrospective cohort studies

• True

• False

One major strength of cohort studies is:

• a) They are usually quicker than randomized controlled trials

• b) They can study multiple outcomes for a single exposure

• c) They are free from all biases

• d) They always provide definitive evidence of causation