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Cohort Study is an observational study in which a group of individuals â a cohort â are followed over a period of time in order to determine either the incidence rate of certain diseases or the risk factors that lead to those diseases. These studies can be either prospective or retrospective.
Table of Contents. 1  The trend toward more collaborative research, and examples of it. 2  What is collaborative research? Collaboration usually involves two or more researchers within an institution or in different institutions, working either in the same field or in different scientific fields or sectors of the economy.