Class: Item

A data element that represents a specific piece of information within a defined context, with data type, constraints, and derivation methods

URI: [odm:class/Item](https://cdisc.org/odm2/class/Item)

erDiagram
CodeList {
    string formatName  
    DataType dataType  
    string name  
    string description  
    string OID  
    stringList aliases  
    string href  
    boolean isNonStandard  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string version  
    string wasDerivedFrom  
}
CodeListItem {
    string description  
    string codedValue  
    string decode  
    boolean other  
    decimal weight  
    stringList aliases  
}
Coding {
    AliasPredicate aliasType  
    string code  
    string codeSystem  
    string codeSystemVersion  
    string decode  
}
Comment {
    string text  
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string wasDerivedFrom  
}
ConceptProperty {
    integer maxOccurs  
    integer minOccurs  
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string wasDerivedFrom  
}
Condition {
    string implementsCondition  
    LogicalOperator operator  
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string wasDerivedFrom  
}
DocumentReference {
    string leafID  
    integerList pages  
    string relationship  
    string title  
    string name  
    string description  
    string OID  
    stringList aliases  
    string href  
    string label  
    string uuid  
    string version  
}
FormalExpression {
    string expression  
    string returnType  
    string context  
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    string uuid  
}
Item {
    DataType dataType  
    integer length  
    string name  
    string description  
    string OID  
    stringList aliases  
    string cdiscNotes  
    string crfCompletionInstructions  
    integer decimalDigits  
    string displayFormat  
    boolean hasNoData  
    string implementationNotes  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string preSpecifiedValue  
    string purpose  
    string role  
    integer significantDigits  
    string uuid  
    string wasDerivedFrom  
}
Method {
    MethodType type  
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string wasDerivedFrom  
}
Origin {
    OriginSource source  
    OriginType type  
}
RangeCheck {
    stringList checkValues  
    Comparator comparator  
    string item  
    SoftHard softHard  
    LogicalOperator operator  
}
ReifiedConcept {
    string name  
    string description  
    string OID  
    stringList aliases  
    string href  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string version  
    string wasDerivedFrom  
}
Resource {
    string attribute  
    string resourceType  
    string name  
    string description  
    string OID  
    stringList aliases  
    string href  
    string label  
    string uuid  
    string version  
}
SiteOrSponsorComment {
    OriginSource sourceType  
    string source  
    string text  
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string wasDerivedFrom  
}
SourceItem {
    stringList resource  
}
Standard {
    PublishingSet publishingSet  
    StandardStatus status  
    StandardType type  
    string version  
    StandardName name  
    string description  
    string OID  
    stringList aliases  
    string label  
    string uuid  
}
WhereClause {
    string name  
    string description  
    string OID  
    stringList aliases  
    string label  
    datetime lastUpdated  
    boolean mandatory  
    string owner  
    string purpose  
    string uuid  
    string wasDerivedFrom  
}

CodeList ||--|o Resource : "externalCodeList"
CodeList ||--|o Standard : "standard"
CodeList ||--}o CodeListItem : "codeListItems"
CodeList ||--}o Coding : "coding"
CodeList ||--}o Comment : "comments"
CodeList ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
CodeListItem ||--|o Coding : "coding"
Comment ||--}o Coding : "coding"
Comment ||--}o Comment : "comments"
Comment ||--}o DocumentReference : "documents"
Comment ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
ConceptProperty ||--|o CodeList : "codeList"
ConceptProperty ||--}o Coding : "coding"
ConceptProperty ||--}o Comment : "comments"
ConceptProperty ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
Condition ||--}o Coding : "coding"
Condition ||--}o Comment : "comments"
Condition ||--}o Condition : "conditions"
Condition ||--}o FormalExpression : "expressions"
Condition ||--}o RangeCheck : "rangeChecks"
Condition ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
DocumentReference ||--}o Coding : "coding"
FormalExpression ||--|o ReturnValue : "returnValue"
FormalExpression ||--}o Coding : "coding"
FormalExpression ||--}o Parameter : "parameters"
FormalExpression ||--}o Resource : "externalCodeLibs"
Item ||--|o CodeList : "codeList, roleCodeList"
Item ||--|o ConceptProperty : "conceptProperty"
Item ||--|o Condition : "collectionExceptionCondition"
Item ||--|o Method : "method"
Item ||--|o Origin : "origin"
Item ||--}o Coding : "coding"
Item ||--}o Comment : "comments"
Item ||--}o RangeCheck : "rangeChecks"
Item ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
Item ||--}o WhereClause : "applicableWhen"
Method ||--|o ReifiedConcept : "implementsConcept"
Method ||--}o Coding : "coding"
Method ||--}o Comment : "comments"
Method ||--}o DocumentReference : "documents"
Method ||--}o FormalExpression : "expressions"
Method ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
Origin ||--}o DocumentReference : "documents"
Origin ||--}o SourceItem : "sourceItems"
RangeCheck ||--}o FormalExpression : "expressions"
ReifiedConcept ||--}o Coding : "coding"
ReifiedConcept ||--}o Comment : "comments"
ReifiedConcept ||--}o ConceptProperty : "properties"
ReifiedConcept ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
Resource ||--}o Coding : "coding"
Resource ||--}o FormalExpression : "selection"
SiteOrSponsorComment ||--}o Coding : "coding"
SiteOrSponsorComment ||--}o Comment : "comments"
SiteOrSponsorComment ||--}o SiteOrSponsorComment : "siteOrSponsorComments"
SourceItem ||--|o Item : "item"
SourceItem ||--}o Coding : "coding"
SourceItem ||--}o DocumentReference : "document"
Standard ||--}o Coding : "coding"
WhereClause ||--}o Coding : "coding"
WhereClause ||--}o Comment : "comments"
WhereClause ||--}o Condition : "conditions"
WhereClause ||--}o SiteOrSponsorComment : "siteOrSponsorComments"

## Inheritance * [GovernedElement](../classes/GovernedElement.md) [ [Identifiable](../classes/Identifiable.md) [Labelled](../classes/Labelled.md) [Governed](../classes/Governed.md)] * **Item** [ [IsODMItem](../classes/IsODMItem.md) [Formatted](../classes/Formatted.md)] ## Slots | Name | Cardinality and Range | Description | Inheritance | | --- | --- | --- | --- | | [dataType](../slots/dataType.md) | 1
[DataType](../enums/DataType.md) | The data type of the item. | direct | | [length](../slots/length.md) | 0..1
[Integer](../types/Integer.md) | The maximum length of the data item in characters. | direct | | [codeList](../slots/codeList.md) | 0..1
[CodeList](../classes/CodeList.md) | Reference to the CodeList that constrains the item values. | direct | | [method](../slots/method.md) | 0..1
[Method](../classes/Method.md) | Reference to the Method element that describes how to derive this item's value. | direct | | [rangeChecks](../slots/rangeChecks.md) | *
[RangeCheck](../classes/RangeCheck.md) | Range checks applied to this item (e.g. edit checks, CORE rules) | direct | | [applicableWhen](../slots/applicableWhen.md) | *
[WhereClause](../classes/WhereClause.md) | References to different situations that define when this item applies.
Multiple whereClauses are combined with OR logic: the item applies if ANY referenced WhereClause matches.
Within each WhereClause, conditions are combined with AND logic: all conditions must be true.

Example: whereClause: ["WC.SYSBP", "WC.DIABP"] means the item applies when
(all conditions in WC.SYSBP are true) OR (all conditions in WC.DIABP are true). | direct | | [origin](../slots/origin.md) | 0..1
[Origin](../classes/Origin.md) | The origin of the data | direct | | [conceptProperty](../slots/conceptProperty.md) | 0..1
[ConceptProperty](../classes/ConceptProperty.md) | Reference to a abstract concept property that this item is a specialization / instance of. | direct | | [role](../slots/role.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | Identifies the role of the item within the containing context, taken from the roleCodeList | [IsODMItem](../classes/IsODMItem.md) | | [roleCodeList](../slots/roleCodeList.md) | 0..1
[CodeList](../classes/CodeList.md) | Reference to the CodeList that defines the roles for this item | [IsODMItem](../classes/IsODMItem.md) | | [hasNoData](../slots/hasNoData.md) | 0..1
[Boolean](../types/Boolean.md) | True if this is a manifest and there is no data for this item | [IsODMItem](../classes/IsODMItem.md) | | [crfCompletionInstructions](../slots/crfCompletionInstructions.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | CRFCompletionInstructions reference: Instructions for the clinical site on how to enter collected information on the CRF | [IsODMItem](../classes/IsODMItem.md) | | [cdiscNotes](../slots/cdiscNotes.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | CDISCNotes reference: Explanatory text for the variable | [IsODMItem](../classes/IsODMItem.md) | | [implementationNotes](../slots/implementationNotes.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | ImplementationNotes reference: Further information, such as rationale and implementation instructions, on how to implement the CRF data collection fields | [IsODMItem](../classes/IsODMItem.md) | | [collectionExceptionCondition](../slots/collectionExceptionCondition.md) | 0..1
[Condition](../classes/Condition.md) | Condition that defines when collection may be exempted | [IsODMItem](../classes/IsODMItem.md) | | [preSpecifiedValue](../slots/preSpecifiedValue.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | Prefill value or a default value for a field that is automatically populated. | [IsODMItem](../classes/IsODMItem.md) | | [decimalDigits](../slots/decimalDigits.md) | 0..1
[Integer](../types/Integer.md) | For decimal values, the number of digits after the decimal point | [Formatted](../classes/Formatted.md) | | [displayFormat](../slots/displayFormat.md) | 0..1
[String](../types/String.md) | A display format for the item | [Formatted](../classes/Formatted.md) | | [significantDigits](../slots/significantDigits.md) | 0..1
[Integer](../types/Integer.md) | For numeric values, the number of significant digits | [Formatted](../classes/Formatted.md) | | [OID](../slots/OID.md) | 1
[String](../types/String.md) | Local identifier within this study/context. Use CDISC OID format for regulatory submissions, or simple strings for internal use. | [Identifiable](../classes/Identifiable.md) | | [uuid](../slots/uuid.md) | 0..1
[String](../types/String.md) | Universal unique identifier | [Identifiable](../classes/Identifiable.md) | | [name](../slots/name.md) | 0..1
[String](../types/String.md) | Short name or identifier, used for field names | [Labelled](../classes/Labelled.md) | | [description](../slots/description.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | Detailed description, shown in tooltips | [Labelled](../classes/Labelled.md) | | [coding](../slots/coding.md) | *
[Coding](../classes/Coding.md) | Semantic tags for this element | [Labelled](../classes/Labelled.md) | | [label](../slots/label.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | Human-readable label, shown in UIs | [Labelled](../classes/Labelled.md) | | [aliases](../slots/aliases.md) | *
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | Alternative name or identifier | [Labelled](../classes/Labelled.md) | | [mandatory](../slots/mandatory.md) | 0..1
[Boolean](../types/Boolean.md) | Is this element required? | [Governed](../classes/Governed.md) | | [comments](../slots/comments.md) | *
[Comment](../classes/Comment.md) | Comment on the element, such as a rationale for its inclusion or exclusion | [Governed](../classes/Governed.md) | | [siteOrSponsorComments](../slots/siteOrSponsorComments.md) | *
[SiteOrSponsorComment](../classes/SiteOrSponsorComment.md) | Comment on the element, such as a rationale for its inclusion or exclusion | [Governed](../classes/Governed.md) | | [purpose](../slots/purpose.md) | 0..1
[String](../types/String.md) or
[TranslatedText](../classes/TranslatedText.md) | Purpose or rationale for this data element | [Governed](../classes/Governed.md) | | [lastUpdated](../slots/lastUpdated.md) | 0..1
[Datetime](../types/Datetime.md) | When the resource was last updated | [Governed](../classes/Governed.md) | | [owner](../slots/owner.md) | 0..1
[String](../types/String.md) or
[User](../classes/User.md) or
[Organization](../classes/Organization.md) | Party responsible for this element | [Governed](../classes/Governed.md) | | [wasDerivedFrom](../slots/wasDerivedFrom.md) | 0..1
[String](../types/String.md) or
[Item](../classes/Item.md) or
[ItemGroup](../classes/ItemGroup.md) or
[MetaDataVersion](../classes/MetaDataVersion.md) or
[CodeList](../classes/CodeList.md) or
[ReifiedConcept](../classes/ReifiedConcept.md) or
[ConceptProperty](../classes/ConceptProperty.md) or
[Condition](../classes/Condition.md) or
[Method](../classes/Method.md) or
[NominalOccurrence](../classes/NominalOccurrence.md) or
[Dataflow](../classes/Dataflow.md) or
[CubeComponent](../classes/CubeComponent.md) or
[DataProduct](../classes/DataProduct.md) or
[ProvisionAgreement](../classes/ProvisionAgreement.md) | Reference to another item that this item implements or extends, e.g. a template Item definition. | [Governed](../classes/Governed.md) | ## Usages | used by | used in | type | used | | --- | --- | --- | --- | | [GovernedElement](../classes/GovernedElement.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Governed](../classes/Governed.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [MetaDataVersion](../classes/MetaDataVersion.md) | [items](../slots/items.md) | range | [Item](../classes/Item.md) | | [MetaDataVersion](../classes/MetaDataVersion.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Item](../classes/Item.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [ItemGroup](../classes/ItemGroup.md) | [items](../slots/items.md) | range | [Item](../classes/Item.md) | | [ItemGroup](../classes/ItemGroup.md) | [keySequence](../slots/keySequence.md) | range | [Item](../classes/Item.md) | | [ItemGroup](../classes/ItemGroup.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [CodeList](../classes/CodeList.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Comment](../classes/Comment.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [ReifiedConcept](../classes/ReifiedConcept.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [ConceptProperty](../classes/ConceptProperty.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [WhereClause](../classes/WhereClause.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Condition](../classes/Condition.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [RangeCheck](../classes/RangeCheck.md) | [item](../slots/item.md) | any_of[range] | [Item](../classes/Item.md) | | [Method](../classes/Method.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [SourceItem](../classes/SourceItem.md) | [item](../slots/item.md) | range | [Item](../classes/Item.md) | | [Parameter](../classes/Parameter.md) | [items](../slots/items.md) | any_of[range] | [Item](../classes/Item.md) | | [SiteOrSponsorComment](../classes/SiteOrSponsorComment.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [NominalOccurrence](../classes/NominalOccurrence.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [DataStructureDefinition](../classes/DataStructureDefinition.md) | [items](../slots/items.md) | range | [Item](../classes/Item.md) | | [DataStructureDefinition](../classes/DataStructureDefinition.md) | [keySequence](../slots/keySequence.md) | range | [Item](../classes/Item.md) | | [DataStructureDefinition](../classes/DataStructureDefinition.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Dataflow](../classes/Dataflow.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [CubeComponent](../classes/CubeComponent.md) | [item](../slots/item.md) | range | [Item](../classes/Item.md) | | [CubeComponent](../classes/CubeComponent.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Measure](../classes/Measure.md) | [item](../slots/item.md) | range | [Item](../classes/Item.md) | | [Measure](../classes/Measure.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Dimension](../classes/Dimension.md) | [item](../slots/item.md) | range | [Item](../classes/Item.md) | | [Dimension](../classes/Dimension.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [DataAttribute](../classes/DataAttribute.md) | [item](../slots/item.md) | range | [Item](../classes/Item.md) | | [DataAttribute](../classes/DataAttribute.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [ObservationRelationship](../classes/ObservationRelationship.md) | [item](../slots/item.md) | range | [Item](../classes/Item.md) | | [DataProduct](../classes/DataProduct.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [ProvisionAgreement](../classes/ProvisionAgreement.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Analysis](../classes/Analysis.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | | [Display](../classes/Display.md) | [wasDerivedFrom](../slots/wasDerivedFrom.md) | any_of[range] | [Item](../classes/Item.md) | ## Identifier and Mapping Information ### Schema Source * from schema: https://cdisc.org/dds ## Mappings | Mapping Type | Mapped Value | | --- | --- | | self | odm:Item | | native | odm:Item | | narrow | fhir:StructureDefinition/variable, fhir:Questionnaire/item, qb:ComponentProperty, omop:Field, omop:DerivedColumn | | related | usdm:BiomedicalConceptProperty, usdm:DerivationConceptProperty, usdm:AnalysisConceptProperty, fhir:ElementDefinition, qb:Measure, qb:Attribute, sdmx:Concept, sdmx:Component, sdmx:Representation, osb:sdtm_variable, osb:specimen, osb:unit_dimension, osb:std_unit | | close | odm:ItemRef, odm:ItemDef, qb:ComponentSpecification, sdmx:DataAttribute, sdmx:MetadataAttribute | ## LinkML Source ### Direct

name: Item
description: A data element that represents a specific piece of information within
  a defined context, with data type, constraints, and derivation methods
from_schema: https://cdisc.org/dds
close_mappings:
- odm:ItemRef
- odm:ItemDef
- qb:ComponentSpecification
- sdmx:DataAttribute
- sdmx:MetadataAttribute
related_mappings:
- usdm:BiomedicalConceptProperty
- usdm:DerivationConceptProperty
- usdm:AnalysisConceptProperty
- fhir:ElementDefinition
- qb:Measure
- qb:Attribute
- sdmx:Concept
- sdmx:Component
- sdmx:Representation
- osb:sdtm_variable
- osb:specimen
- osb:unit_dimension
- osb:std_unit
narrow_mappings:
- fhir:StructureDefinition/variable
- fhir:Questionnaire/item
- qb:ComponentProperty
- omop:Field
- omop:DerivedColumn
is_a: GovernedElement
mixins:
- IsODMItem
- Formatted
attributes:
  dataType:
    name: dataType
    description: The data type of the item.
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    - CodeList
    - Parameter
    - ReturnValue
    range: DataType
    required: true
  length:
    name: length
    description: The maximum length of the data item in characters.
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    range: integer
  codeList:
    name: codeList
    description: Reference to the CodeList that constrains the item values.
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    - ConceptProperty
    - Parameter
    range: CodeList
  method:
    name: method
    description: Reference to the Method element that describes how to derive this
      item's value.
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    range: Method
  rangeChecks:
    name: rangeChecks
    description: Range checks applied to this item (e.g. edit checks, CORE rules)
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    - Condition
    range: RangeCheck
    multivalued: true
    inlined: true
    inlined_as_list: true
  applicableWhen:
    name: applicableWhen
    description: 'References to different situations that define when this item applies.

      Multiple whereClauses are combined with OR logic: the item applies if ANY referenced
      WhereClause matches.

      Within each WhereClause, conditions are combined with AND logic: all conditions
      must be true.


      Example: whereClause: ["WC.SYSBP", "WC.DIABP"] means the item applies when

      (all conditions in WC.SYSBP are true) OR (all conditions in WC.DIABP are true).

      '
    from_schema: https://cdisc.org/dds
    close_mappings:
    - fhir:StructureDefinition/context
    rank: 1000
    domain_of:
    - Item
    - ItemGroup
    - Parameter
    - Analysis
    range: WhereClause
    multivalued: true
    inlined: false
  origin:
    name: origin
    description: The origin of the data
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    range: Origin
    inlined: true
  conceptProperty:
    name: conceptProperty
    description: Reference to a abstract concept property that this item is a specialization
      / instance of.
    from_schema: https://cdisc.org/dds
    rank: 1000
    domain_of:
    - Item
    - Parameter
    range: ConceptProperty

### Induced

name: Item
description: A data element that represents a specific piece of information within
  a defined context, with data type, constraints, and derivation methods
from_schema: https://cdisc.org/dds
close_mappings:
- odm:ItemRef
- odm:ItemDef
- qb:ComponentSpecification
- sdmx:DataAttribute
- sdmx:MetadataAttribute
related_mappings:
- usdm:BiomedicalConceptProperty
- usdm:DerivationConceptProperty
- usdm:AnalysisConceptProperty
- fhir:ElementDefinition
- qb:Measure
- qb:Attribute
- sdmx:Concept
- sdmx:Component
- sdmx:Representation
- osb:sdtm_variable
- osb:specimen
- osb:unit_dimension
- osb:std_unit
narrow_mappings:
- fhir:StructureDefinition/variable
- fhir:Questionnaire/item
- qb:ComponentProperty
- omop:Field
- omop:DerivedColumn
is_a: GovernedElement
mixins:
- IsODMItem
- Formatted
attributes:
  dataType:
    name: dataType
    description: The data type of the item.
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    - CodeList
    - Parameter
    - ReturnValue
    range: DataType
    required: true
  length:
    name: length
    description: The maximum length of the data item in characters.
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    range: integer
  codeList:
    name: codeList
    description: Reference to the CodeList that constrains the item values.
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    - ConceptProperty
    - Parameter
    range: CodeList
  method:
    name: method
    description: Reference to the Method element that describes how to derive this
      item's value.
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    range: Method
  rangeChecks:
    name: rangeChecks
    description: Range checks applied to this item (e.g. edit checks, CORE rules)
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    - Condition
    range: RangeCheck
    multivalued: true
    inlined: true
    inlined_as_list: true
  applicableWhen:
    name: applicableWhen
    description: 'References to different situations that define when this item applies.

      Multiple whereClauses are combined with OR logic: the item applies if ANY referenced
      WhereClause matches.

      Within each WhereClause, conditions are combined with AND logic: all conditions
      must be true.


      Example: whereClause: ["WC.SYSBP", "WC.DIABP"] means the item applies when

      (all conditions in WC.SYSBP are true) OR (all conditions in WC.DIABP are true).

      '
    from_schema: https://cdisc.org/dds
    close_mappings:
    - fhir:StructureDefinition/context
    rank: 1000
    owner: Item
    domain_of:
    - Item
    - ItemGroup
    - Parameter
    - Analysis
    range: WhereClause
    multivalued: true
    inlined: false
  origin:
    name: origin
    description: The origin of the data
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    range: Origin
    inlined: true
  conceptProperty:
    name: conceptProperty
    description: Reference to a abstract concept property that this item is a specialization
      / instance of.
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Item
    - Parameter
    range: ConceptProperty
  role:
    name: role
    description: Identifies the role of the item within the containing context, taken
      from the roleCodeList
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    - Organization
    - CubeComponent
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  roleCodeList:
    name: roleCodeList
    description: Reference to the CodeList that defines the roles for this item
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    range: CodeList
  hasNoData:
    name: hasNoData
    description: True if this is a manifest and there is no data for this item
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    - ItemGroup
    range: boolean
  crfCompletionInstructions:
    name: crfCompletionInstructions
    description: 'CRFCompletionInstructions reference: Instructions for the clinical
      site on how to enter collected information on the CRF'
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  cdiscNotes:
    name: cdiscNotes
    description: 'CDISCNotes reference: Explanatory text for the variable'
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  implementationNotes:
    name: implementationNotes
    description: 'ImplementationNotes reference: Further information, such as rationale
      and implementation instructions, on how to implement the CRF data collection
      fields'
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  collectionExceptionCondition:
    name: collectionExceptionCondition
    description: Condition that defines when collection may be exempted
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    range: Condition
  preSpecifiedValue:
    name: preSpecifiedValue
    description: Prefill value or a default value for a field that is automatically
      populated.
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - IsODMItem
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  decimalDigits:
    name: decimalDigits
    description: For decimal values, the number of digits after the decimal point
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Formatted
    range: integer
  displayFormat:
    name: displayFormat
    description: A display format for the item
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Formatted
    range: string
  significantDigits:
    name: significantDigits
    description: For numeric values, the number of significant digits
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Formatted
    range: integer
  OID:
    name: OID
    description: Local identifier within this study/context. Use CDISC OID format
      for regulatory submissions, or simple strings for internal use.
    from_schema: https://cdisc.org/dds
    rank: 1000
    identifier: true
    owner: Item
    domain_of:
    - Identifiable
    range: string
    required: true
  uuid:
    name: uuid
    description: Universal unique identifier
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Identifiable
    range: string
  name:
    name: name
    description: Short name or identifier, used for field names
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Labelled
    - DefClass
    - SubClass
    - Standard
    range: string
  description:
    name: description
    description: Detailed description, shown in tooltips
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Labelled
    - CodeListItem
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  coding:
    name: coding
    description: Semantic tags for this element
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Labelled
    - CodeListItem
    - SourceItem
    range: Coding
    multivalued: true
    inlined: true
    inlined_as_list: true
  label:
    name: label
    description: Human-readable label, shown in UIs
    from_schema: https://cdisc.org/dds
    exact_mappings:
    - skos:prefLabel
    rank: 1000
    owner: Item
    domain_of:
    - Labelled
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  aliases:
    name: aliases
    description: Alternative name or identifier
    from_schema: https://cdisc.org/dds
    exact_mappings:
    - skos:altLabel
    rank: 1000
    owner: Item
    domain_of:
    - Labelled
    - CodeListItem
    range: string
    multivalued: true
    inlined: true
    inlined_as_list: true
    any_of:
    - range: string
    - range: TranslatedText
  mandatory:
    name: mandatory
    description: Is this element required?
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: boolean
  comments:
    name: comments
    description: Comment on the element, such as a rationale for its inclusion or
      exclusion
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: Comment
    multivalued: true
    inlined: false
  siteOrSponsorComments:
    name: siteOrSponsorComments
    description: Comment on the element, such as a rationale for its inclusion or
      exclusion
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: SiteOrSponsorComment
    multivalued: true
    inlined: false
  purpose:
    name: purpose
    description: Purpose or rationale for this data element
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: string
    any_of:
    - range: string
    - range: TranslatedText
  lastUpdated:
    name: lastUpdated
    description: When the resource was last updated
    from_schema: https://cdisc.org/dds
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: datetime
  owner:
    name: owner
    description: Party responsible for this element
    from_schema: https://cdisc.org/dds
    narrow_mappings:
    - prov:wasAttributedTo
    - prov:wasAssociatedBy
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: string
    any_of:
    - range: User
    - range: Organization
    - range: string
  wasDerivedFrom:
    name: wasDerivedFrom
    description: Reference to another item that this item implements or extends, e.g.
      a template Item definition.
    from_schema: https://cdisc.org/dds
    exact_mappings:
    - prov:wasDerivedFrom
    rank: 1000
    owner: Item
    domain_of:
    - Governed
    range: string
    any_of:
    - range: Item
    - range: ItemGroup
    - range: MetaDataVersion
    - range: CodeList
    - range: ReifiedConcept
    - range: ConceptProperty
    - range: Condition
    - range: Method
    - range: NominalOccurrence
    - range: Dataflow
    - range: CubeComponent
    - range: DataProduct
    - range: ProvisionAgreement

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