epoch

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epoch

In 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.

epoch

(ĕp′ŏk)
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.
References in periodicals archive ?
(22.) Robert Lipsyte, "Only One More," New York Times, October 16, 1969; and New York Times, December 31, 1969.
I WOULD like to bring to the attention of those who served in the UK Armed Forces before December 31, 1969, that they may be entitled to a Veterans Badge.
All those who served in the armed forces or Merchant Navy at any time up to December 31, 1969, can now apply.