A researcher wants to identify lifestyle factors that increase the risk of stomach cancer in men.His study design involves enrolling 250 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)In-vivo
B)Experimental
C)Case-control
D)Cohort

Question

Quizplus · Accepted Answer

The researcher is conducting a case-control study, which involves enrolling participants with a specific condition (in this case, stomach cancer) and comparing them to similar individuals without the condition to identify potential risk factors. The study design does not involve experimental manipulation or following a group of individuals over time, ruling out choices B and D. In-vivo refers to research conducted within a living organism or system, which is not specified in the scenario, so choice A can also be eliminated.

A Researcher Wants to Identify Lifestyle Factors That Increase the Risk