Point-of-Care Device Implementation Guide
current - CI Build

Point-of-Care Device Implementation Guide, published by HL7 International - Health Care Devices Work Group. This is not an authorized publication; it is the continuous build for version current). This version is based on the current content of https://github.com/HL7/uv-pocd/ and changes regularly. See the Directory of published versions

StructureDefinition: CompoundNumericObservation

StructureDefinition for Observation resources that represent numerical measurements, calculations, or settings with multiple components.

The official URL for this profile is:

http://hl7.org/fhir/uv/pocd/StructureDefinition/CompoundNumericObservation

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

This structure is derived from Observation

Summary

The profile defines the following rules:

  • Observation.code and Observation.component.code shall have a coding from the ISO/IEEE 11073 MDC Metric nomenclature if there is an appropriate code available. Depending on the type of measurement, the Vital Signs profiles may require additional LOINC codes.
  • Observation.subject shall be present and refer to a Patient resource or MDS Device resource.
  • Observation.value[x] must not be there.
  • Observation.device shall be present and refer to the Numeric DeviceMetric resource where this observation belongs to.
  • For each component, Observation.component.valueQuantity or, if there is no value, Observation.component.dataAbsentReason shall be present. Values shall have a UCUM unit code.
  • Observation.component.interpretation coding includes measurement status.

Mandatory: 3 elements (1 nested mandatory element)
Fixed Value: 1 element
Prohibited: 1 element

Structures

This structure refers to these other structures:

Slices

This structure defines the following Slices:

  • The element Observation.component.value[x] is sliced based on the value of type:$this (Closed)

This structure is derived from Observation

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*ObservationMeasurements and simple assertions
... code 1..1CodeableConceptType of observation (code / type)
Binding: MDC Metric nomenclature (extensible)
... subject 1..1Reference(Patient | MDS Device profile)Who and/or what the observation is about
... value[x] 0..0
... component I1..*BackboneElementComponent results
pocd-obs-1: If there is no value a dataAbsentReason shall be present
.... code 1..1CodeableConceptType of component observation (code / type)
Binding: MDC Metric nomenclature (extensible)
.... value[x] I0..1(Slice Definition)Actual component result
Slice: Unordered, Closed by type:$this
..... valueQuantity:valueQuantity 0..1QuantityActual component result
...... value 1..1decimalNumerical value (with implicit precision)
...... system 0..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
.... dataAbsentReason I0..1CodeableConceptWhy the component result is missing
.... interpretation 0..*CodeableConceptHigh, low, normal, etc.
Binding: Observation interpretation codes (extensible)

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation I0..*ObservationMeasurements and simple assertions
... id Σ0..1stringLogical id of this artifact
... meta ΣI0..1MetaMetadata about the resource
... implicitRules ?!ΣI0..1uriA set of rules under which this content was created
... language I0..1codeLanguage of the resource content
Binding: CommonLanguages (preferred)
Max Binding: AllLanguages
... text I0..1NarrativeText summary of the resource, for human interpretation
... contained 0..*ResourceContained, inline Resources
... extension I0..*ExtensionAdditional content defined by implementations
... modifierExtension ?!I0..*ExtensionExtensions that cannot be ignored
... identifier ΣI0..*IdentifierBusiness Identifier for observation
... basedOn ΣI0..*Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)Fulfills plan, proposal or order
... partOf ΣI0..*Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)Part of referenced event
... status ?!ΣI1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... category I0..*CodeableConceptClassification of type of observation
Binding: ObservationCategoryCodes (preferred)
... code ΣI1..1CodeableConceptType of observation (code / type)
Binding: MDC Metric nomenclature (extensible)
... subject ΣI1..1Reference(Patient | MDS Device profile)Who and/or what the observation is about
... focus ΣI0..*Reference(Resource)What the observation is about, when it is not about the subject of record
... encounter ΣI0..1Reference(Encounter)Healthcare event during which this observation is made
... effective[x] ΣI0..1Clinically relevant time/time-period for observation
.... effectiveDateTimedateTime
.... effectivePeriodPeriod
.... effectiveTimingTiming
.... effectiveInstantinstant
... issued ΣI0..1instantDate/Time this version was made available
... performer ΣI0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)Who is responsible for the observation
... dataAbsentReason I0..1CodeableConceptWhy the result is missing
Binding: DataAbsentReason (extensible)
... interpretation I0..*CodeableConceptHigh, low, normal, etc.
Binding: ObservationInterpretationCodes (extensible)
... note I0..*AnnotationComments about the observation
... bodySite I0..1CodeableConceptObserved body part
Binding: SNOMEDCTBodyStructures (example)
... method I0..1CodeableConceptHow it was done
Binding: ObservationMethods (example)
... specimen I0..1Reference(Specimen)Specimen used for this observation
... device I1..1Reference(Numeric DeviceMetric profile)(Measurement) Device
... referenceRange I0..*BackboneElementProvides guide for interpretation
obs-3: Must have at least a low or a high or text
.... id 0..1stringUnique id for inter-element referencing
.... extension I0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!ΣI0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... low I0..1SimpleQuantityLow Range, if relevant
.... high I0..1SimpleQuantityHigh Range, if relevant
.... type I0..1CodeableConceptReference range qualifier
Binding: ObservationReferenceRangeMeaningCodes (preferred)
.... appliesTo I0..*CodeableConceptReference range population
Binding: ObservationReferenceRangeAppliesToCodes (example)
.... age I0..1RangeApplicable age range, if relevant
.... text I0..1stringText based reference range in an observation
... hasMember ΣI0..*Reference(Observation | QuestionnaireResponse | MolecularSequence)Related resource that belongs to the Observation group
... derivedFrom ΣI0..*Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence)Related measurements the observation is made from
... component ΣI1..*BackboneElementComponent results
pocd-obs-1: If there is no value a dataAbsentReason shall be present
.... id 0..1stringUnique id for inter-element referencing
.... extension I0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!ΣI0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... code ΣI1..1CodeableConceptType of component observation (code / type)
Binding: MDC Metric nomenclature (extensible)
.... value[x] ΣI0..1(Slice Definition)Actual component result
Slice: Unordered, Closed by type:$this
..... value[x]:valueQuantity ΣI0..1QuantityActual component result
...... id 0..1stringUnique id for inter-element referencing
...... extension I0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
...... value ΣI1..1decimalNumerical value (with implicit precision)
...... comparator ?!ΣI0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required)
...... unit ΣI0..1stringUnit representation
...... system ΣI0..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code ΣI0..1codeCoded form of the unit
.... dataAbsentReason I0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible)
.... interpretation I0..*CodeableConceptHigh, low, normal, etc.
Binding: Observation interpretation codes (extensible)
.... referenceRange I0..*Unknown reference to #Observation.referenceRange
Provides guide for interpretation of component result

doco Documentation for this format

This structure is derived from Observation

Summary

The profile defines the following rules:

  • Observation.code and Observation.component.code shall have a coding from the ISO/IEEE 11073 MDC Metric nomenclature if there is an appropriate code available. Depending on the type of measurement, the Vital Signs profiles may require additional LOINC codes.
  • Observation.subject shall be present and refer to a Patient resource or MDS Device resource.
  • Observation.value[x] must not be there.
  • Observation.device shall be present and refer to the Numeric DeviceMetric resource where this observation belongs to.
  • For each component, Observation.component.valueQuantity or, if there is no value, Observation.component.dataAbsentReason shall be present. Values shall have a UCUM unit code.
  • Observation.component.interpretation coding includes measurement status.

Mandatory: 3 elements (1 nested mandatory element)
Fixed Value: 1 element
Prohibited: 1 element

Structures

This structure refers to these other structures:

Slices

This structure defines the following Slices:

  • The element Observation.component.value[x] is sliced based on the value of type:$this (Closed)

Differential View

This structure is derived from Observation

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation 0..*ObservationMeasurements and simple assertions
... code 1..1CodeableConceptType of observation (code / type)
Binding: MDC Metric nomenclature (extensible)
... subject 1..1Reference(Patient | MDS Device profile)Who and/or what the observation is about
... value[x] 0..0
... component I1..*BackboneElementComponent results
pocd-obs-1: If there is no value a dataAbsentReason shall be present
.... code 1..1CodeableConceptType of component observation (code / type)
Binding: MDC Metric nomenclature (extensible)
.... value[x] I0..1(Slice Definition)Actual component result
Slice: Unordered, Closed by type:$this
..... valueQuantity:valueQuantity 0..1QuantityActual component result
...... value 1..1decimalNumerical value (with implicit precision)
...... system 0..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
.... dataAbsentReason I0..1CodeableConceptWhy the component result is missing
.... interpretation 0..*CodeableConceptHigh, low, normal, etc.
Binding: Observation interpretation codes (extensible)

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Observation I0..*ObservationMeasurements and simple assertions
... id Σ0..1stringLogical id of this artifact
... meta ΣI0..1MetaMetadata about the resource
... implicitRules ?!ΣI0..1uriA set of rules under which this content was created
... language I0..1codeLanguage of the resource content
Binding: CommonLanguages (preferred)
Max Binding: AllLanguages
... text I0..1NarrativeText summary of the resource, for human interpretation
... contained 0..*ResourceContained, inline Resources
... extension I0..*ExtensionAdditional content defined by implementations
... modifierExtension ?!I0..*ExtensionExtensions that cannot be ignored
... identifier ΣI0..*IdentifierBusiness Identifier for observation
... basedOn ΣI0..*Reference(CarePlan | DeviceRequest | ImmunizationRecommendation | MedicationRequest | NutritionOrder | ServiceRequest)Fulfills plan, proposal or order
... partOf ΣI0..*Reference(MedicationAdministration | MedicationDispense | MedicationStatement | Procedure | Immunization | ImagingStudy)Part of referenced event
... status ?!ΣI1..1coderegistered | preliminary | final | amended +
Binding: ObservationStatus (required)
... category I0..*CodeableConceptClassification of type of observation
Binding: ObservationCategoryCodes (preferred)
... code ΣI1..1CodeableConceptType of observation (code / type)
Binding: MDC Metric nomenclature (extensible)
... subject ΣI1..1Reference(Patient | MDS Device profile)Who and/or what the observation is about
... focus ΣI0..*Reference(Resource)What the observation is about, when it is not about the subject of record
... encounter ΣI0..1Reference(Encounter)Healthcare event during which this observation is made
... effective[x] ΣI0..1Clinically relevant time/time-period for observation
.... effectiveDateTimedateTime
.... effectivePeriodPeriod
.... effectiveTimingTiming
.... effectiveInstantinstant
... issued ΣI0..1instantDate/Time this version was made available
... performer ΣI0..*Reference(Practitioner | PractitionerRole | Organization | CareTeam | Patient | RelatedPerson)Who is responsible for the observation
... dataAbsentReason I0..1CodeableConceptWhy the result is missing
Binding: DataAbsentReason (extensible)
... interpretation I0..*CodeableConceptHigh, low, normal, etc.
Binding: ObservationInterpretationCodes (extensible)
... note I0..*AnnotationComments about the observation
... bodySite I0..1CodeableConceptObserved body part
Binding: SNOMEDCTBodyStructures (example)
... method I0..1CodeableConceptHow it was done
Binding: ObservationMethods (example)
... specimen I0..1Reference(Specimen)Specimen used for this observation
... device I1..1Reference(Numeric DeviceMetric profile)(Measurement) Device
... referenceRange I0..*BackboneElementProvides guide for interpretation
obs-3: Must have at least a low or a high or text
.... id 0..1stringUnique id for inter-element referencing
.... extension I0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!ΣI0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... low I0..1SimpleQuantityLow Range, if relevant
.... high I0..1SimpleQuantityHigh Range, if relevant
.... type I0..1CodeableConceptReference range qualifier
Binding: ObservationReferenceRangeMeaningCodes (preferred)
.... appliesTo I0..*CodeableConceptReference range population
Binding: ObservationReferenceRangeAppliesToCodes (example)
.... age I0..1RangeApplicable age range, if relevant
.... text I0..1stringText based reference range in an observation
... hasMember ΣI0..*Reference(Observation | QuestionnaireResponse | MolecularSequence)Related resource that belongs to the Observation group
... derivedFrom ΣI0..*Reference(DocumentReference | ImagingStudy | Media | QuestionnaireResponse | Observation | MolecularSequence)Related measurements the observation is made from
... component ΣI1..*BackboneElementComponent results
pocd-obs-1: If there is no value a dataAbsentReason shall be present
.... id 0..1stringUnique id for inter-element referencing
.... extension I0..*ExtensionAdditional content defined by implementations
.... modifierExtension ?!ΣI0..*ExtensionExtensions that cannot be ignored even if unrecognized
.... code ΣI1..1CodeableConceptType of component observation (code / type)
Binding: MDC Metric nomenclature (extensible)
.... value[x] ΣI0..1(Slice Definition)Actual component result
Slice: Unordered, Closed by type:$this
..... value[x]:valueQuantity ΣI0..1QuantityActual component result
...... id 0..1stringUnique id for inter-element referencing
...... extension I0..*ExtensionAdditional content defined by implementations
Slice: Unordered, Open by value:url
...... value ΣI1..1decimalNumerical value (with implicit precision)
...... comparator ?!ΣI0..1code< | <= | >= | > - how to understand the value
Binding: QuantityComparator (required)
...... unit ΣI0..1stringUnit representation
...... system ΣI0..1uriSystem that defines coded unit form
Fixed Value: http://unitsofmeasure.org
...... code ΣI0..1codeCoded form of the unit
.... dataAbsentReason I0..1CodeableConceptWhy the component result is missing
Binding: DataAbsentReason (extensible)
.... interpretation I0..*CodeableConceptHigh, low, normal, etc.
Binding: Observation interpretation codes (extensible)
.... referenceRange I0..*Unknown reference to #Observation.referenceRange
Provides guide for interpretation of component result

doco Documentation for this format

 

Other representations of profile: Schematron

Terminology Bindings

Terminology Bindings

PathConformanceValueSet
Observation.languagepreferredCommonLanguages
Max Binding: AllLanguages
Observation.statusrequiredObservationStatus
Observation.categorypreferredObservationCategoryCodes
Observation.codeextensibleMdcMetric
Observation.dataAbsentReasonextensibleDataAbsentReason
Observation.interpretationextensibleObservationInterpretationCodes
Observation.bodySiteexampleSNOMEDCTBodyStructures
Observation.methodexampleObservationMethods
Observation.referenceRange.typepreferredObservationReferenceRangeMeaningCodes
Observation.referenceRange.appliesToexampleObservationReferenceRangeAppliesToCodes
Observation.component.codeextensibleMdcMetric
Observation.component.value[x]:valueQuantity.comparatorrequiredQuantityComparator
Observation.component.dataAbsentReasonextensibleDataAbsentReason
Observation.component.interpretationextensibleObservationInterpretation

Constraints

Constraints

IdPathDetailsRequirements
dom-2ObservationIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3ObservationIf the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource
: contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4ObservationIf a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated
: contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5ObservationIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6ObservationA resource should have narrative for robust management
: text.`div`.exists()
obs-6ObservationdataAbsentReason SHALL only be present if Observation.value[x] is not present
: dataAbsentReason.empty() or value.empty()
obs-7ObservationIf Observation.code is the same as an Observation.component.code then the value element associated with the code SHALL NOT be present
: value.empty() or component.code.where(coding.intersect(%resource.code.coding).exists()).empty()
ele-1Observation.metaAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.implicitRulesAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.languageAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.textAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.extensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.extensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.modifierExtensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.modifierExtensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.identifierAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.basedOnAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.partOfAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.statusAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.categoryAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.codeAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.subjectAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.focusAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.encounterAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.effective[x]All FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.issuedAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.performerAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.dataAbsentReasonAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.interpretationAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.noteAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.bodySiteAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.methodAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.specimenAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.deviceAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.referenceRangeAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
obs-3Observation.referenceRangeMust have at least a low or a high or text
: low.exists() or high.exists() or text.exists()
ele-1Observation.referenceRange.extensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.referenceRange.extensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.referenceRange.modifierExtensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.referenceRange.modifierExtensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.referenceRange.lowAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.referenceRange.highAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.referenceRange.typeAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.referenceRange.appliesToAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.referenceRange.ageAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.referenceRange.textAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.hasMemberAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.derivedFromAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.componentAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
pocd-obs-1Observation.componentIf there is no value a dataAbsentReason shall be present
: value.exists() or dataAbsentReason.exists()
ele-1Observation.component.extensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.component.extensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.component.modifierExtensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.component.modifierExtensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.component.codeAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]All FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]:valueQuantityAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]:valueQuantity.extensionAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1Observation.component.value[x]:valueQuantity.extensionMust have either extensions or value[x], not both
: extension.exists() != value.exists()
ele-1Observation.component.value[x]:valueQuantity.valueAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]:valueQuantity.comparatorAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]:valueQuantity.unitAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]:valueQuantity.systemAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.value[x]:valueQuantity.codeAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.dataAbsentReasonAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.interpretationAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ele-1Observation.component.referenceRangeAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())