| Element Name | ItemDef |
|---|---|
| Parent Element(s) | MetaDataVersion |
| Element XPath(s) | /ODM/Study/MetaDataVersion/ItemDef |
| Element Textual Value | None |
| Usage | Conditional. There must be an ItemDef element for each unique ItemOID attribute value in the study. |
| Attributes | OID, Name, DataType, Length, DisplayFormat, VariableSet, CommentOID |
| Child Elements | (Description?, Question?, RangeCheck*, CodeListRef?, ValueListRef?, Coding*, Alias*) |
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