You would like to do a study of the association between multivitamin use and multiple myeloma. You are worried about confounding by socioeconomic status. There are a number of techniques that you could use to control for this confounding. Name one of these techniques and explain in a sentence or two how it works.

You would like to do a study of the association between multivitamin use and multiple myeloma. You are worried about confounding by socioeconomic status. There are a number of techniques that you could use to control for this confounding. Name one of these techniques and explain in a sentence or two how it works.