Question

Why a “control” is important in a case-control study of a disease?

Answer 1

Step-by-step explanation:

Purpose of Case Control Studies

To determine whether or not an association exists between a disease and a particular risk factor. To start with a group of people with disease and work back to see whether a possible risk factor may be the cause. It may be the first step in testing a hypothesis.

Answer 2

To assess whether an association between a disease and a specific risk factor exists or not. Starting with a group of people with illness and working back to see if the cause could be a potential risk factor. In testing a hypothesis, this may be the first step.