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Now lets add some more clinical data to fifthTest.xml and save it as SeventhTuteTest.xml.

Add it between </vitals> and </singlePatient> at the end:

    <observations>
        <observationCode code="43396009"
          codeSystem="2.16.840.1.113883.6.96"
          codeSystemName="SNOMED-CT">
        <displayName value = "Hemoglobin A1c measurement " />
        <translation code="4548-4"
          codeSystem="2.16.840.1.113883.6.1"
          codeSystemName="LN">
          <displayName value = "Hemoglobin A1c/Hemoglobin.Total In Blood" />
        </translation>
        </observationCode>
        <dateTime value = "20160616" />
        <value xsi:type = "PQ" value = "9.0" unit = "%"/>
     </observations>
     <diabeticFootObservations>
        <diabeticFootExamDate value = "20160616" />
        <leftDorsalisPedisPulseFull value = "false" />
        <rightDorsalisPedisPulseFull value = "true" />
        <leftPosteriorTibialPulseFull value = "true" />
        <rightPosteriorTibialPulseFull value = "true" />
        <leftAnkleBrachialIndex value = "0.7" />
        <rightAnkleBrachialIndex value = "0.9" />
        <anyFootDeformity value = "false" />
        <anyNeurologicalChanges value = "false" />
        <anyUlcerPresent value = "false" />
     </diabeticFootObservations>

Cut and paste the following GELLO into a new workspace:

    Imports ExtendedDiabeticFoot
    Context ExtendedDiabeticFootExample_SinglePatient

    Let lastFootExam: DiabeticFootObservations = diabeticFootObservations->
     sortedBy(diabeticFootExamDate)->last()

    Let lastHBA1c: PQ = observations->
     select(o|o.observationCode.code='43396009')
     ->sortedBy(dateTime)->last().value.oclAsType(PQ)

    --flag a high risk situation

    Let highRiskDiabeticFoot: Boolean =
     (lastFootExam.leftAnkleBrachialIndex < 0.9 or
      lastFootExam.rightAnkleBrachialIndex < 0.9) or
     (lastFootExam.leftDorsalisPedisPulseFull = false or
      lastFootExam.rightDorsalisPedisPulseFull = false) or
     lastFootExam.anyFootDeformity = true or
     lastFootExam.anyNeurologicalChanges = true or
     lastFootExam.anyUlcerPresent= true
      and
     lastHBA1c > factory.PQ(7.5, '%')

    If highRiskDiabeticFoot then 'High Risk DiabeticFoot - consider referral'
     else
      ''
     

endif

And after compiling and saving it say as tuteSeven.gello , run:

Image AddedFirst we add a HBA1c result