Class: KeySet

A KeySet references a single entity (e.g., a study, a subject, a study event). Only those attributes needed to specify the particular entity are required, and all others must be omitted (see Section 2.7, Clinical Data Keys).

URI: odm:KeySet

erDiagram
KeySet {
    subjectKeyType subjectKey  
    repeatKey studyEventRepeatKey  
    repeatKey itemGroupRepeatKey  
}
ItemDef {
    oid OID  
    nameType name  
    DataType dataType  
    positiveInteger length  
    text displayFormat  
    text variableSet  
}
Alias {
    text context  
    text name  
}
Coding {
    text code  
    uriorcurie system  
    text systemName  
    text systemVersion  
    text label  
    uriorcurie href  
    uriorcurie ref  
    text commentOID  
}
ValueListRef {

}
CodeListRef {

}
RangeCheck {
    Comparator comparator  
    SoftOrHard softHard  
}
CDISCNotes {

}
ImplementationNotes {

}
CRFCompletionInstructions {

}
Prompt {

}
Question {

}
Definition {

}
Description {

}
CommentDef {
    oid OID  
}
ItemGroupDef {
    oid OID  
    nameType name  
    ItemGroupRepeatingType repeating  
    positiveInteger repeatingLimit  
    YesOrNo isReferenceData  
    text structure  
    nameType datasetName  
    text domain  
    ItemGroupTypeType type  
    text purpose  
    YesOnly isNonStandard  
    YesOnly hasNoData  
}
ItemRef {
    positiveInteger keySequence  
    YesOnly isNonStandard  
    YesOnly hasNoData  
    YesOnly repeat  
    YesOnly other  
    text role  
    CoreType core  
    text preSpecifiedValue  
    positiveInteger orderNumber  
    YesOrNo mandatory  
}
ItemGroupRef {
    positiveInteger orderNumber  
    YesOrNo mandatory  
}
Leaf {
    oid ID  
    uriorcurie href  
}
Origin {
    OriginType type  
    OriginSource source  
}
WorkflowRef {

}
Class {
    ItemGroupClass name  
}
Standard {
    oid OID  
    StandardName name  
    StandardType type  
    StandardPublishingSet publishingSet  
    text version  
    StandardStatus status  
}
StudyEventDef {
    oid OID  
    nameType name  
    YesOrNo repeating  
    EventType type  
    text category  
}
MetaDataVersion {
    oid OID  
    nameType name  
}
MethodDef {
    oid OID  
    nameType name  
    MethodType type  
}
ConditionDef {
    oid OID  
    nameType name  
}
CodeList {
    oid OID  
    nameType name  
    CLDataType dataType  
    YesOnly isNonStandard  
}
StudyEventGroupDef {
    oid OID  
    nameType name  
}
WorkflowDef {
    oid OID  
    nameType name  
}
Protocol {

}
WhereClauseDef {
    oid OID  
}
ValueListDef {
    oid OID  
}
SupplementalDoc {

}
AnnotatedCRF {

}
Standards {

}
Include {
    uriorcurie href  
}
Study {
    oid OID  
    nameType studyName  
    nameType protocolName  
    nameType versionID  
    nameType versionName  
    nameType status  
}

KeySet ||--|| Study : "studyOID"
KeySet ||--|o MetaDataVersion : "metaDataVersionOID"
KeySet ||--|o StudyEventDef : "studyEventOID"
KeySet ||--|o ItemGroupDef : "itemGroupOID"
KeySet ||--|o ItemDef : "itemOID"
ItemDef ||--|o CommentDef : "commentOID"
ItemDef ||--|o Description : "description"
ItemDef ||--|o Definition : "definition"
ItemDef ||--|o Question : "question"
ItemDef ||--|o Prompt : "prompt"
ItemDef ||--|o CRFCompletionInstructions : "cRFCompletionInstructions"
ItemDef ||--|o ImplementationNotes : "implementationNotes"
ItemDef ||--|o CDISCNotes : "cDISCNotes"
ItemDef ||--}o RangeCheck : "rangeCheck"
ItemDef ||--|o CodeListRef : "codeListRef"
ItemDef ||--|o ValueListRef : "valueListRef"
ItemDef ||--}o Coding : "coding"
ItemDef ||--}o Alias : "alias"
ValueListRef ||--|| ValueListDef : "valueListOID"
CodeListRef ||--|| CodeList : "codeListOID"
RangeCheck ||--|o ItemDef : "itemOID"
RangeCheck ||--|o ErrorMessage : "errorMessage"
RangeCheck ||--|o MethodSignature : "methodSignature"
RangeCheck ||--}o FormalExpression : "formalExpression"
RangeCheck ||--}o CheckValue : "checkValue"
CDISCNotes ||--}o TranslatedText : "translatedText"
ImplementationNotes ||--}o TranslatedText : "translatedText"
CRFCompletionInstructions ||--}o TranslatedText : "translatedText"
Prompt ||--}o TranslatedText : "translatedText"
Question ||--}o TranslatedText : "translatedText"
Definition ||--}o TranslatedText : "translatedText"
Description ||--}o TranslatedText : "translatedText"
CommentDef ||--|o Description : "description"
CommentDef ||--}o DocumentRef : "documentRef"
ItemGroupDef ||--|o Leaf : "archiveLocationID"
ItemGroupDef ||--|o Standard : "standardOID"
ItemGroupDef ||--|o CommentDef : "commentOID"
ItemGroupDef ||--|o Description : "description"
ItemGroupDef ||--|o Class : "itemGroupClass"
ItemGroupDef ||--}o Coding : "coding"
ItemGroupDef ||--|o WorkflowRef : "workflowRef"
ItemGroupDef ||--}o Origin : "origin"
ItemGroupDef ||--}o Alias : "alias"
ItemGroupDef ||--|o Leaf : "leaf"
ItemGroupDef ||--}o ItemGroupRef : "itemGroupRef"
ItemGroupDef ||--}o ItemRef : "itemRef"
ItemRef ||--|| ItemDef : "itemOID"
ItemRef ||--|o MethodDef : "methodOID"
ItemRef ||--|o ItemDef : "unitsItemOID"
ItemRef ||--|o CodeList : "roleCodeListOID"
ItemRef ||--|o ConditionDef : "collectionExceptionConditionOID"
ItemRef ||--}o Origin : "origin"
ItemRef ||--}o WhereClauseRef : "whereClauseRef"
ItemGroupRef ||--|| ItemGroupDef : "itemGroupOID"
ItemGroupRef ||--|o MethodDef : "methodOID"
ItemGroupRef ||--|o ConditionDef : "collectionExceptionConditionOID"
Leaf ||--|o Title : "title"
Origin ||--|o Description : "description"
Origin ||--|o SourceItems : "sourceItems"
Origin ||--}o Coding : "coding"
Origin ||--}o DocumentRef : "documentRef"
WorkflowRef ||--|| WorkflowDef : "workflowOID"
Class ||--}o SubClass : "subClass"
Standard ||--|o CommentDef : "commentOID"
StudyEventDef ||--|o CommentDef : "commentOID"
StudyEventDef ||--|o Description : "description"
StudyEventDef ||--}o ItemGroupRef : "itemGroupRef"
StudyEventDef ||--|o WorkflowRef : "workflowRef"
StudyEventDef ||--}o Coding : "coding"
StudyEventDef ||--}o Alias : "alias"
MetaDataVersion ||--|o CommentDef : "commentOID"
MetaDataVersion ||--|o Description : "description"
MetaDataVersion ||--|o Include : "include"
MetaDataVersion ||--|o Standards : "standards"
MetaDataVersion ||--|o AnnotatedCRF : "annotatedCRF"
MetaDataVersion ||--|o SupplementalDoc : "supplementalDoc"
MetaDataVersion ||--}o ValueListDef : "valueListDef"
MetaDataVersion ||--}o WhereClauseDef : "whereClauseDef"
MetaDataVersion ||--|o Protocol : "protocol"
MetaDataVersion ||--}o WorkflowDef : "workflowDef"
MetaDataVersion ||--}o StudyEventGroupDef : "studyEventGroupDef"
MetaDataVersion ||--}o StudyEventDef : "studyEventDef"
MetaDataVersion ||--}o ItemGroupDef : "itemGroupDef"
MetaDataVersion ||--}o ItemDef : "itemDef"
MetaDataVersion ||--}o CodeList : "codeList"
MetaDataVersion ||--}o ConditionDef : "conditionDef"
MetaDataVersion ||--}o MethodDef : "methodDef"
MetaDataVersion ||--}o CommentDef : "commentDef"
MetaDataVersion ||--}o Leaf : "leaf"
MethodDef ||--|o CommentDef : "commentOID"
MethodDef ||--|o Description : "description"
MethodDef ||--|o MethodSignature : "methodSignature"
MethodDef ||--}o FormalExpression : "formalExpression"
MethodDef ||--}o Alias : "alias"
MethodDef ||--}o DocumentRef : "documentRef"
ConditionDef ||--|o CommentDef : "commentOID"
ConditionDef ||--|o Description : "description"
ConditionDef ||--|o MethodSignature : "methodSignature"
ConditionDef ||--}o FormalExpression : "formalExpression"
ConditionDef ||--}o Alias : "alias"
CodeList ||--|o CommentDef : "commentOID"
CodeList ||--|o Standard : "standardOID"
CodeList ||--|o Description : "description"
CodeList ||--}o CodeListItem : "codeListItem"
CodeList ||--}o Coding : "coding"
CodeList ||--}o Alias : "alias"
StudyEventGroupDef ||--|o Arm : "armOID"
StudyEventGroupDef ||--|o Epoch : "epochOID"
StudyEventGroupDef ||--|o CommentDef : "commentOID"
StudyEventGroupDef ||--|o Description : "description"
StudyEventGroupDef ||--|o WorkflowRef : "workflowRef"
StudyEventGroupDef ||--}o Coding : "coding"
StudyEventGroupDef ||--}o StudyEventGroupRef : "studyEventGroupRef"
StudyEventGroupDef ||--}o StudyEventRef : "studyEventRef"
WorkflowDef ||--|o Description : "description"
WorkflowDef ||--|o WorkflowStart : "workflowStart"
WorkflowDef ||--}o WorkflowEnd : "workflowEnd"
WorkflowDef ||--}o Transition : "transition"
WorkflowDef ||--}o Branching : "branching"
Protocol ||--|o Description : "description"
Protocol ||--|o StudySummary : "studySummary"
Protocol ||--|o StudyStructure : "studyStructure"
Protocol ||--|o TrialPhase : "trialPhase"
Protocol ||--|o StudyTimings : "studyTimings"
Protocol ||--|o StudyIndications : "studyIndications"
Protocol ||--|o StudyInterventions : "studyInterventions"
Protocol ||--|o StudyObjectives : "studyObjectives"
Protocol ||--|o StudyEndPoints : "studyEndPoints"
Protocol ||--|o StudyTargetPopulation : "studyTargetPopulation"
Protocol ||--|o StudyEstimands : "studyEstimands"
Protocol ||--|o InclusionExclusionCriteria : "inclusionExclusionCriteria"
Protocol ||--}o StudyEventGroupRef : "studyEventGroupRef"
Protocol ||--|o WorkflowRef : "workflowRef"
Protocol ||--}o Alias : "alias"
WhereClauseDef ||--|o CommentDef : "commentOID"
WhereClauseDef ||--}o RangeCheck : "rangeCheck"
ValueListDef ||--|o Description : "description"
ValueListDef ||--}o ItemRef : "itemRef"
SupplementalDoc ||--}o DocumentRef : "documentRef"
AnnotatedCRF ||--}o DocumentRef : "documentRef"
Standards ||--}o Standard : "standard"
Include ||--|| Study : "studyOID"
Include ||--|| MetaDataVersion : "metaDataVersionOID"
Study ||--|o Description : "description"
Study ||--}o MetaDataVersion : "metaDataVersion"

Slots

Name Cardinality* and Range Description Inheritance
studyOID 1..1
Study		 References the StudyOID in an ODM/ClinicalData element. direct
subjectKey 0..1
subjectKeyType		 Reference to a SubjectKey attribute value for a SubjectData child element of ... direct
metaDataVersionOID 0..1
MetaDataVersion		 Reference to a MetaDataVersionOID attribute value for this ClinicalData eleme... direct
studyEventOID 0..1
StudyEventDef		 Reference to a StudyEventOID attribute value for a StudyEventData child eleme... direct
studyEventRepeatKey 0..1
repeatKey		 Reference to a StudyEventRepeatKey attribute value for a StudyEventData child... direct
itemGroupOID 0..1
ItemGroupDef		 Reference to an ItemGroupOID attribute value for an ItemGroupData child eleme... direct
itemGroupRepeatKey 0..1
repeatKey		 Reference to an ItemGroupRepeatKey attribute value for an ItemGroupData child... direct
itemOID 0..1
ItemDef		 Reference to an ItemOID attribute for an ItemData child element of this Clini... direct

* See LinkML documentation for cardinality definitions.

Usages

used by used in type used
Association keySet range KeySet

See Also

Identifier and Mapping Information

Schema Source

  • from schema: http://www.cdisc.org/ns/odm/v2.0

Mappings

Mapping Type Mapped Value
self odm:KeySet
native odm:KeySet

LinkML Source

Direct

name: KeySet
description: A KeySet references a single entity (e.g., a study, a subject, a study
  event). Only those attributes needed to specify the particular entity are required,
  and all others must be omitted (see Section 2.7, Clinical Data Keys).
from_schema: http://www.cdisc.org/ns/odm/v2.0
see_also:
- https://wiki.cdisc.org/display/PUB/KeySet
rank: 1000
slots:
- studyOID
- subjectKey
- metaDataVersionOID
- studyEventOID
- studyEventRepeatKey
- itemGroupOID
- itemGroupRepeatKey
- itemOID
slot_usage:
  studyOID:
    name: studyOID
    description: References the StudyOID in an ODM/ClinicalData element.
    comments:
    - Matches the Association/@StudyOID.
    domain_of:
    - Include
    - SourceItem
    - AdminData
    - MetaDataVersionRef
    - ReferenceData
    - ClinicalData
    - Association
    - KeySet
    range: Study
    required: true
  subjectKey:
    name: subjectKey
    description: Reference to a SubjectKey attribute value for a SubjectData child
      element of this ClinicalData element.
    comments:
    - 'Optional

      Matches the SubjectKey attribute for a ClinicalData/SubjectData element.'
    domain_of:
    - SubjectData
    - KeySet
    range: subjectKeyType
  metaDataVersionOID:
    name: metaDataVersionOID
    description: Reference to a MetaDataVersionOID attribute value for this ClinicalData
      element.
    comments:
    - 'Optional

      Matches the MetaDataVersionOID attribute for this ClinicalData element.'
    domain_of:
    - Include
    - SourceItem
    - MetaDataVersionRef
    - ReferenceData
    - ClinicalData
    - Association
    - KeySet
    range: MetaDataVersion
  studyEventOID:
    name: studyEventOID
    description: Reference to a StudyEventOID attribute value for a StudyEventData
      child element of this ClinicalData/SubjectData element.
    comments:
    - 'Optional

      Matches the StudyEventOID attribute for a StudyEventData child element of this
      ClinicalData/SubjectData element.'
    domain_of:
    - StudyEventRef
    - AbsoluteTimingConstraint
    - StudyEventData
    - KeySet
    range: StudyEventDef
  studyEventRepeatKey:
    name: studyEventRepeatKey
    description: Reference to a StudyEventRepeatKey attribute value for a StudyEventData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - 'Optional

      Matches the StudyEventRepeatKey attribute for this ClinicalData/SubjectData/StudyEventData
      element.'
    domain_of:
    - StudyEventData
    - KeySet
    range: repeatKey
  itemGroupOID:
    name: itemGroupOID
    description: Reference to an ItemGroupOID attribute value for an ItemGroupData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - 'Optional

      Matches the ItemGroupOID attribute for an ItemGroupData child of this ClinicalData/SubjectData/StudyEventData.'
    domain_of:
    - ItemGroupRef
    - SourceItem
    - ItemGroupData
    - KeySet
    range: ItemGroupDef
  itemGroupRepeatKey:
    name: itemGroupRepeatKey
    description: Reference to an ItemGroupRepeatKey attribute value for an ItemGroupData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - '(Optional

      Matches the ItemGroupRepeatKey value for this ClinicalData/SubjectData/StudyEventData/ItemGroupData
      element.'
    domain_of:
    - ItemGroupData
    - KeySet
    range: repeatKey
  itemOID:
    name: itemOID
    description: Reference to an ItemOID attribute for an ItemData child element of
      this ClinicalData/SubjectData/StudyEventData/ItemGroupData element.
    comments:
    - 'Optional

      Matches the ItemOID for an ItemData child of this ClinicalData/SubjectData/StudyEventData/ItemGroupData
      element.'
    domain_of:
    - ItemRef
    - SourceItem
    - RangeCheck
    - ItemData
    - KeySet
    range: ItemDef
class_uri: odm:KeySet

Induced

name: KeySet
description: A KeySet references a single entity (e.g., a study, a subject, a study
  event). Only those attributes needed to specify the particular entity are required,
  and all others must be omitted (see Section 2.7, Clinical Data Keys).
from_schema: http://www.cdisc.org/ns/odm/v2.0
see_also:
- https://wiki.cdisc.org/display/PUB/KeySet
rank: 1000
slot_usage:
  studyOID:
    name: studyOID
    description: References the StudyOID in an ODM/ClinicalData element.
    comments:
    - Matches the Association/@StudyOID.
    domain_of:
    - Include
    - SourceItem
    - AdminData
    - MetaDataVersionRef
    - ReferenceData
    - ClinicalData
    - Association
    - KeySet
    range: Study
    required: true
  subjectKey:
    name: subjectKey
    description: Reference to a SubjectKey attribute value for a SubjectData child
      element of this ClinicalData element.
    comments:
    - 'Optional

      Matches the SubjectKey attribute for a ClinicalData/SubjectData element.'
    domain_of:
    - SubjectData
    - KeySet
    range: subjectKeyType
  metaDataVersionOID:
    name: metaDataVersionOID
    description: Reference to a MetaDataVersionOID attribute value for this ClinicalData
      element.
    comments:
    - 'Optional

      Matches the MetaDataVersionOID attribute for this ClinicalData element.'
    domain_of:
    - Include
    - SourceItem
    - MetaDataVersionRef
    - ReferenceData
    - ClinicalData
    - Association
    - KeySet
    range: MetaDataVersion
  studyEventOID:
    name: studyEventOID
    description: Reference to a StudyEventOID attribute value for a StudyEventData
      child element of this ClinicalData/SubjectData element.
    comments:
    - 'Optional

      Matches the StudyEventOID attribute for a StudyEventData child element of this
      ClinicalData/SubjectData element.'
    domain_of:
    - StudyEventRef
    - AbsoluteTimingConstraint
    - StudyEventData
    - KeySet
    range: StudyEventDef
  studyEventRepeatKey:
    name: studyEventRepeatKey
    description: Reference to a StudyEventRepeatKey attribute value for a StudyEventData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - 'Optional

      Matches the StudyEventRepeatKey attribute for this ClinicalData/SubjectData/StudyEventData
      element.'
    domain_of:
    - StudyEventData
    - KeySet
    range: repeatKey
  itemGroupOID:
    name: itemGroupOID
    description: Reference to an ItemGroupOID attribute value for an ItemGroupData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - 'Optional

      Matches the ItemGroupOID attribute for an ItemGroupData child of this ClinicalData/SubjectData/StudyEventData.'
    domain_of:
    - ItemGroupRef
    - SourceItem
    - ItemGroupData
    - KeySet
    range: ItemGroupDef
  itemGroupRepeatKey:
    name: itemGroupRepeatKey
    description: Reference to an ItemGroupRepeatKey attribute value for an ItemGroupData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - '(Optional

      Matches the ItemGroupRepeatKey value for this ClinicalData/SubjectData/StudyEventData/ItemGroupData
      element.'
    domain_of:
    - ItemGroupData
    - KeySet
    range: repeatKey
  itemOID:
    name: itemOID
    description: Reference to an ItemOID attribute for an ItemData child element of
      this ClinicalData/SubjectData/StudyEventData/ItemGroupData element.
    comments:
    - 'Optional

      Matches the ItemOID for an ItemData child of this ClinicalData/SubjectData/StudyEventData/ItemGroupData
      element.'
    domain_of:
    - ItemRef
    - SourceItem
    - RangeCheck
    - ItemData
    - KeySet
    range: ItemDef
attributes:
  studyOID:
    name: studyOID
    description: References the StudyOID in an ODM/ClinicalData element.
    comments:
    - Matches the Association/@StudyOID.
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: studyOID
    owner: KeySet
    domain_of:
    - Include
    - SourceItem
    - AdminData
    - MetaDataVersionRef
    - ReferenceData
    - ClinicalData
    - Association
    - KeySet
    range: Study
    required: true
  subjectKey:
    name: subjectKey
    description: Reference to a SubjectKey attribute value for a SubjectData child
      element of this ClinicalData element.
    comments:
    - 'Optional

      Matches the SubjectKey attribute for a ClinicalData/SubjectData element.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: subjectKey
    owner: KeySet
    domain_of:
    - SubjectData
    - KeySet
    range: subjectKeyType
  metaDataVersionOID:
    name: metaDataVersionOID
    description: Reference to a MetaDataVersionOID attribute value for this ClinicalData
      element.
    comments:
    - 'Optional

      Matches the MetaDataVersionOID attribute for this ClinicalData element.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: metaDataVersionOID
    owner: KeySet
    domain_of:
    - Include
    - SourceItem
    - MetaDataVersionRef
    - ReferenceData
    - ClinicalData
    - Association
    - KeySet
    range: MetaDataVersion
  studyEventOID:
    name: studyEventOID
    description: Reference to a StudyEventOID attribute value for a StudyEventData
      child element of this ClinicalData/SubjectData element.
    comments:
    - 'Optional

      Matches the StudyEventOID attribute for a StudyEventData child element of this
      ClinicalData/SubjectData element.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: studyEventOID
    owner: KeySet
    domain_of:
    - StudyEventRef
    - AbsoluteTimingConstraint
    - StudyEventData
    - KeySet
    range: StudyEventDef
  studyEventRepeatKey:
    name: studyEventRepeatKey
    description: Reference to a StudyEventRepeatKey attribute value for a StudyEventData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - 'Optional

      Matches the StudyEventRepeatKey attribute for this ClinicalData/SubjectData/StudyEventData
      element.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: studyEventRepeatKey
    owner: KeySet
    domain_of:
    - StudyEventData
    - KeySet
    range: repeatKey
  itemGroupOID:
    name: itemGroupOID
    description: Reference to an ItemGroupOID attribute value for an ItemGroupData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - 'Optional

      Matches the ItemGroupOID attribute for an ItemGroupData child of this ClinicalData/SubjectData/StudyEventData.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: itemGroupOID
    owner: KeySet
    domain_of:
    - ItemGroupRef
    - SourceItem
    - ItemGroupData
    - KeySet
    range: ItemGroupDef
  itemGroupRepeatKey:
    name: itemGroupRepeatKey
    description: Reference to an ItemGroupRepeatKey attribute value for an ItemGroupData
      child element of this ClinicalData/SubjectData/StudyEventData element.
    comments:
    - '(Optional

      Matches the ItemGroupRepeatKey value for this ClinicalData/SubjectData/StudyEventData/ItemGroupData
      element.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: itemGroupRepeatKey
    owner: KeySet
    domain_of:
    - ItemGroupData
    - KeySet
    range: repeatKey
  itemOID:
    name: itemOID
    description: Reference to an ItemOID attribute for an ItemData child element of
      this ClinicalData/SubjectData/StudyEventData/ItemGroupData element.
    comments:
    - 'Optional

      Matches the ItemOID for an ItemData child of this ClinicalData/SubjectData/StudyEventData/ItemGroupData
      element.'
    from_schema: http://www.cdisc.org/ns/odm/v2.0
    rank: 1000
    alias: itemOID
    owner: KeySet
    domain_of:
    - ItemRef
    - SourceItem
    - RangeCheck
    - ItemData
    - KeySet
    range: ItemDef
class_uri: odm:KeySet