The Case-Control Method – Looking Backwards

The process used in a case-control trial is examined and the strengths of the method described, especially its speed and flexibility. However, the obstacles and reservations associated with the technique are also discussed. The fact it only uncovers association rather than cause-and-effect relationships is highlighted. Ways to enhance the case-control method are provided. Based on the available evidence a conclusion is reached that the case-control method can lead researchers in the right direction, but not guarantee a definitive answer to a medical research question.