What does a cohort study mean?
Moreover, what are the characteristics of a cohort study?
The characteristic feature of a cohort study is that the investigator identifies subjects at a point in time when they do not have the outcome of interest and compares the incidence of the outcome of interest among groups of exposed and unexposed (or less exposed) subjects.
Likewise, why is a cohort study good? Cohort studies provide the best information about the causation of disease, because you follow persons from exposure to the occurrence of the disease. They may require long periods of follow-up since disease may occur a long time after exposure. Therefore, it is a very expensive study design.
One may also ask, what is a cohort study in statistics?
A Cohort study, used in the medical fields and social sciences, is an observational study used to estimate how often disease or life events happen in a certain population. “Life events” might include: incidence rate, relative risk or absolute risk. The study usually has two groups: exposed and not exposed.
What is a case control study vs cohort study?
The case–control study design is often used in the study of rare diseases or as a preliminary study where little is known about the association between the risk factor and disease of interest. Compared to prospective cohort studies they tend to be less costly and shorter in duration.