Researchers investigated whether increased body mass index was a risk factor for

Question

Researchers investigated whether increased body mass index was a risk factor for prostate cancer. In the Health Professionals Follow-Up Study, 51,529 male US health professionals aged between 40 and 75 years were recruited in 1986 and self reported that they were free of prostate cancer at the start of the study. Participants were then followed up at regular intervals until 1994 and assessed for prostate cancer. Which of the following is a correct description of the study? An ecologic study A cohort study A case-control study.

Explanation / Answer

c)A case control study is a perfect description of the study

A case-control study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute.

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