Biostatistics & Research · single question
A group of smokers is followed for 8 years to check the incidence of cancer. Which type of study is this?
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Correct answer: A. Cohort study
✓ A) Cohort study is correct.
A cohort study follows a group (cohort) with a shared characteristic (smoking) FORWARD in time to observe the incidence of an outcome (cancer). It is prospective (or retrospective cohort). Cross-sectional = snapshot in time. Case-control = starts with outcome, looks back at exposure. Experimental = researcher controls the intervention (RCT). The key features here: pre-defined group, longitudinal follow-up, measuring incidence = cohort study.
A cohort study follows a group (cohort) with a shared characteristic (smoking) FORWARD in time to observe the incidence of an outcome (cancer). It is prospective (or retrospective cohort). Cross-sectional = snapshot in time. Case-control = starts with outcome, looks back at exposure. Experimental = researcher controls the intervention (RCT). The key features here: pre-defined group, longitudinal follow-up, measuring incidence = cohort study.
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