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Cohort Effects

The study of cohort effects is important in etiological research on the causes and distributional characteristics of diseases or disorders and can be important for efficient planning for future public health resource needs and services. A cohort is a group of people who share a common set of environmental experiences or exposures based on common temporal, spatial, and/or relationship characteristics, the effects of which are assumed to be stable within each cohort. For example, a birth cohort consists of all people born in a given calendar year. Over the life course, members of a birth cohort share a common chronological sequence of historical experiences and exposures associated with trends and events in their economic, demographic, social, technical, and cultural environment. Cohort analysis is the study ...

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