This page is part of the FHIR Specification (v1.4.0: STU 3 Ballot 3). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions
Logical Model V3 Data type IVL_TS (Interval)
<StructureDefinition xmlns="http://hl7.org/fhir"> <id value="IVL_TS"/> <extension url="http://www.healthintersections.com.au/fhir/StructureDefinition/extension-namespace"> <valueUri value="urn:hl7-org:v3"/> </extension> <url value="http://hl7.org/fhir/StructureDefinition/IVL_TS"/> <name value="V3 Data type IVL_TS (Interval)"/> <display value="V3 Data type IVL_TS (Interval)"/> <status value="active"/> <experimental value="false"/> <publisher value="HL7"/> <description value="A set of consecutive values of an ordered base data type."/> <kind value="logical"/> <abstract value="false"/> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/SXCM_TS"/> <snapshot> <element> <path value="IVL_TS"/> <min value="1"/> <max value="*"/> <type> <code value="Element"/> </type> </element> <element> <path value="IVL_TS.nullFlavor"/> <representation value="xmlAttr"/> <label value="Exceptional Value Detail"/> <definition value="If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing."/> <min value="0"/> <max value="1"/> <type> <code value="code"/> </type> <binding> <strength value="required"/> <valueSetReference> <reference value="http://hl7.org/fhir/ValueSet/v3-NullFlavor"/> </valueSetReference> </binding> </element> <element> <path value="IVL_TS.value"/> <representation value="xmlAttr"/> <min value="0"/> <max value="1"/> <type> <code value="dateTime"/> </type> </element> <element> <path value="IVL_TS.inclusive"/> <representation value="xmlAttr"/> <min value="0"/> <max value="1"/> <type> <code value="boolean"/> </type> </element> <element> <path value="IVL_TS.operator"/> <representation value="xmlAttr"/> <min value="0"/> <max value="1"/> <type> <code value="code"/> </type> </element> <element> <path value="IVL_TS.low"/> <label value="Low Boundary"/> <definition value="This is the low limit of the interval."/> <min value="0"/> <max value="1"/> <type> <code value="TS"/> </type> </element> <element> <path value="IVL_TS.high"/> <label value="High Boundary"/> <definition value="This is the high limit of the interval."/> <min value="0"/> <max value="1"/> <type> <code value="TS"/> </type> </element> <element> <path value="IVL_TS.width"/> <label value="Width"/> <definition value="The difference between high and low boundary. The purpose of distinguishing a width property is to handle all cases of incomplete information symmetrically. In any interval representation only two of the three properties high, low, and width need to be stated and the third can be derived."/> <min value="0"/> <max value="1"/> <type> <code value="PQ"/> </type> </element> <element> <path value="IVL_TS.center"/> <label value="Central Value"/> <definition value="The arithmetic mean of the interval (low plus high divided by 2). The purpose of distinguishing the center as a semantic property is for conversions of intervals from and to point values."/> <min value="0"/> <max value="1"/> <type> <code value="TS"/> </type> </element> </snapshot> <differential> <element> <path value="IVL_TS"/> <min value="1"/> <max value="*"/> <type> <code value="Element"/> </type> </element> <element> <path value="IVL_TS.low"/> <label value="Low Boundary"/> <definition value="This is the low limit of the interval."/> <min value="0"/> <max value="1"/> <type> <code value="TS"/> </type> </element> <element> <path value="IVL_TS.high"/> <label value="High Boundary"/> <definition value="This is the high limit of the interval."/> <min value="0"/> <max value="1"/> <type> <code value="TS"/> </type> </element> <element> <path value="IVL_TS.width"/> <label value="Width"/> <definition value="The difference between high and low boundary. The purpose of distinguishing a width property is to handle all cases of incomplete information symmetrically. In any interval representation only two of the three properties high, low, and width need to be stated and the third can be derived."/> <min value="0"/> <max value="1"/> <type> <code value="PQ"/> </type> </element> <element> <path value="IVL_TS.center"/> <label value="Central Value"/> <definition value="The arithmetic mean of the interval (low plus high divided by 2). The purpose of distinguishing the center as a semantic property is for conversions of intervals from and to point values."/> <min value="0"/> <max value="1"/> <type> <code value="TS"/> </type> </element> </differential> </StructureDefinition>
Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.