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ItemGroupRef Attributes | ItemGroupRef Attributes | A reference to ItemGroupRef references an ItemGroupDef as it occurs within a specific StudyEventDef or ItemGroupDef. The list of ItemGroupRefs identifies the types of item groups that are allowed to occur within this type of studyevent or (nested)
itemgoupitem group.
The ItemGroupRefs within a single StudyEventDef or ItemGroupDef must not have duplicate ItemGroupOID or OrderNumber attribute values.The OrderNumber attribute provides an ordering on the ItemGroupDefs (within StudyEventDef or ItemGroupDef) for use whenever a list of ItemGroupDefs is presented to a user. They do not imply anything about event scheduling, time ordering, or data correctness. Order of execution is preferably defined in a workflow (element WorkflowDef) .
The Mandatory flag indicates that the clinical data for an instance of the containing form, studyevent or itemgroup would be incomplete without an instance of this type of itemgroup. ODM clinical data files that are incomplete in this sense may be considered incomplete for study review and analysis purposes.
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If the CollectionExceptionConditionOID attribute is provided, it references a ConditionDef that describes the circumstances under which data for this ItemGroup should not be collected.