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Gary - How can we describe origin here? Can we simply refer to Define-XML?

The Supplemental Qualifiers (SUPP--) special purpose dataset model is used to represent both nonstandard variables (NSVs) and attributions with their relationship to records in a parent dataset. SUPP-- datasets will only be used with datasets based on the general-observation classes described in the SDTM (Events, Findings, Interventions) and Demographics (DM).

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Values for variable QORIG represent the origin of where the value represented in IDVARVAL originated (e.g., collected via CRF) and will be populated using origins origin types for SDTM datasets described in in the CDISC Define-XML standard.

Nonstandard Variables

SUPP-- represents the metadata and data for each NSV/value combination and relates this to the observation or observations qualified by the NSV in the parent dataset. The name, label, and value of the NSV are represented in SUPP-- dataset variables QNAM, QLABEL, and QVAL respectively. The origin of the NSV value will be represented in variable QORIG. When the value of an NSV is assigned, variable QEVAL will represent the role of the individual or individuals who assigned the value.

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