Incident cases in a case control study are defined as:

What is a major cause of selection bias in cohort studies?

Which of the following would not be included in the inclusion criteria for a cohort study?

Overly broad case definitions can lead to:

In a prospective cohort study, which of the following occurs first?

In a retrospective cohort study, what has already occurred at the start of the study?

What is the main direction of inquiry in cohort studies?

Logic error can be avoided by writing program instructions in specific sequence.

There is no difference between data and information.

I have to take a unit quiz first in order to have access to the exam.