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Substance Use Sponsor Defined Identifier
One or more sponsor defined characters used to name substance usage data. (NCI Thesaurus)
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An identifier that describes the relative position of substance use data within a series.
The method a substance was introduced to a subject.
The literal identifier of the substance in use.
The rationale why substance use data was not obtained.
An indication or description regarding an episode of substance usage.
An indication or description that an individual's substance usage status is never, current, or former.
