| Element Name | ItemGroupDef |
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| Parent Element(s) | MetaDataVersion |
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| Element XPath(s) | /ODM/Study/MetaDataVersion/ItemGroupDef |
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| Element Textual Value | None |
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| Attributes | OID, Name, Repeating, IsReferenceData, Structure, ArchiveLocationID, DatasetName, Domain, Type, Purpose, StandardOID, IsNonStandard, HasNoData, CommentOID |
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| Child Elements | (Description?, Class?, (ItemGroupRef*, ItemRef*)+, Coding*, WorkflowRef?, Origin*, Alias*, leaf?) |
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| Usage/Business Rules | - Business Rule(s):
- There must be an ItemGroupDef element for each unique ItemGroupOID attribute value in the study.
- Other Information:
- The Coding child element allows to associate semantics within the group. For example, a LOINC panel code in the case that the ItemGroup represents a laboratory panel.
- The WorkflowRef child element allows to reference a workflow definition (WorkflowDef) for navigation within the ItemGroup, for example, when the ItemGroup represents a form or questionnaire (or part of it) where there is a workflow between the items or groups of items.
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