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Substance Use End Relative to Reference Period
A characterization of the relationship of a substance use conclusion point in time to a reference point in time. (NCI Thesaurus)
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The day of the week substance usage concluded.
The date and time substance usage has concluded.
The stop date of the substance usage.
The unit of measure for the period of time over which substance usage occurs.
The length of time that substance usage occurs.
The unit of measure for the substance usage dose.
