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This example illustrates how the coding information for a product issue might be represented. The parent domain (RDOMAIN) is PI, and IDVAR is PISEQ. QNAM holds the name of the supplemental qualifier variable being defined. This only shows the data for subject 2029. The data recorded in QVAL applies to the subject’s records, where IDVAR (PISEQ) equals the value specified in IDVARVAL.
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