PEER Liberia Project

Publication Date


Document Type



Clinical Epidemiology | Epidemiology | Family Medicine | Infectious Disease | Medical Education | Statistics and Probability


This presentation provides an overview of cohort studies and relative risk. The learning objectives are to be able to: Define a cohort study and the steps for the study; Understand the populations in a cohort study; Understand timing in a cohort study and the difference between retrospective, prospective and ambi-directional cohort studies; Understand the selection of the cohort population and the collection of exposure and outcome data; Understand the sources of bias in a cohort study; Understand the calculation and interpretation of the relative risk; and, Understand use of the new-castle Ottawa quality assessment score for cohort studies.


epidemiology, epidemiological studies, cohort studies, relative risk

Rights and Permissions

Copyright 2019 The Author

DOI of Published Version


Journal/Book/Conference Title

PEER Liberia Research Training Workshop II


Presented at the PEER Liberia Research Training Workshop II, February 25-March 1, 2019, JFK Medical Center, Monrovia, Liberia.



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