∞ generated and posted on 2020.12.06 ∞

Group of more or less equivalent individuals.

Typically, in ecology, this equivalence is in terms of approximate age, such as for generating life tables along with survivorship curves.

Cohorts are also relevant to epidemiology as well as , where effort is made to control variables (controlled variables) by matching with those individuals that instead serve as negative controls.

This idea of a cohort being a group of equivalent individuals is also used explicitly to describe conspecifics.