A group of patients with atherosclerosis are followed forward over a period of time to investigate the outcome according to exposure to different factors. It started with 2 groups free of disease and followed forward for a period of time. What is the SINGLE most likely study design?
A. Prospective cohort study
B. Retrospective cohort study
C. Case control study
D. Randomized controlled study
E. Prevalence
A prospective cohort study assembles participants and follows them into the future