epoch(redirected from starting dates)
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epochIn clinical trials, the interval of time in the planned conduct of a study—the term epoch is intended to replace period, cycle, phase, stage and other temporal terms. An epoch is associated with a purpose (e.g., screening, randomisation, treatment, follow-up), and applies across all arms of the study.
A measurable amount of time; e.g., the length of time used in standardized sleep studies (usually 30 sec to 1 min), or the duration of a particular geological or biological event, as indicated in earth sciences.