Body:
| EMPTY |
Attributes:
| ItemGroupOID | oidref | Reference to the ItemGroupDef. | |
| OrderNumber | integer | (optional) | |
| Mandatory | (Yes | No) | ||
| CollectionExceptionConditionOID | oidref | (optional) | Reference to a ConditionDef |
Contained in:
A reference to an ItemGroupDef as it occurs within a specific FormDef (deprecated), StudyEventDef or ItemGroupDef. The list of ItemGroupRefs identifies the types of item groups that are allowed to occur within this type of form, studyevent or (nested) itemgroup. The ItemGroupRefs within a single FormDef, StudyEventDef or ItemGroupDef must not have duplicate ItemGroupOIDs nor OrderNumbers.
The OrderNumbers provide an ordering on the ItemGroupDefs (within the containing FormDef, 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 must preferably be 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.
If the CollectionExceptionConditionOID attribute is provided, it references a ConditionDef that describes the circumstances under which data for this ItemGroup should not be collected.