4. why is it important to match case subjects and control subjects so closely in a case-control study?

Why is it important to match case subjects and control subjects so closely in a case-control study?

So that they have as little of differences as possible which will limit the possible factors to getting a disease.

the answer is a. mindy is leading by example. hope this .

birth control pills, the birth control patch, and the vaginal birth control ring are these hormones prevent pregnancy mainly by stopping ovulation