A researcher wants to identify lifestyle factors that increase the risk of stomach cancer in men.His study design involves enrolling 250 adult men who have stomach cancer and 250 men who are cancer-free but have similar characteristics and backgrounds as the men who have stomach cancer.The researcher collects and analyzes information about each participant's lifestyle.Based on this information,what kind of study is the researcher conducting?

Question

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The researcher is conducting a case-control study, as they are comparing a group of individuals with stomach cancer (cases) to a similar group without stomach cancer (controls) and collecting information on their lifestyle factors.

A Researcher Wants to Identify Lifestyle Factors That Increase the Risk