|Document ID (ISN)||110544|
|ISSN - Serial title
||1877-7856 - Encyclopédie médico-chirurgicale
|Convention or series no.
||Fascicule 16870-A-10, 3-2010
||Goldberg M., Zins M.
||Epidemiologic cohort studies
||Études épidémiologiques de cohorte [in French]|
||Toxicologie-Pathologie professionnelle, 3rd Quarter 2004, No.168, 8p. Illus. 13 ref.
||Cohort studies allow the evaluation of various risk factors on health under the most favorable methodological conditions. This article on "exposed and unexposed" cohort studies, also called nested case-control studies starts by reviewing some of the basics of epidemiology, namely: risk factors, types of statistical associations, confounding factors, causal criteria and relative risk. Next, the basic principles of prospective and historical surveys are described, together with the methods for calculating and analyzing risks. The method for calculating standardized mortality rations (SMRs) is described in detail. Finally, with the help of several examples, some of the practical methodological problems that are frequently encountered in cohort studies are briefly discussed.
||France; epidemiology; case-control study; cohort study; description of technique
||mortality; confounding factors; healthy worker effect; statistical evaluation; reliability; risk factors; encyclopaedia
||F - Information notes, codes of practice, standards
|Broad subject area(s)
||Occupational medicine, epidemiology