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?
A)Cohort
B)Case-control
C)In vivo
D)Experimental

Question

Quizplus · Accepted Answer

The researcher is conducting a case-control study, where participants with a disease (cases) are compared with those without the disease (controls) but with similar characteristics and backgrounds. In this case, the researcher is comparing lifestyle factors between men who have stomach cancer (cases) and those who do not have it (controls).

A Researcher Wants to Identify Lifestyle Factors That Increase the Risk