Designation:E2171−02(Reapproved2013)AnAmericanNationalStandardStandardPracticeforRating-ScaleMeasuresRelevanttotheElectronicHealthRecord1ThisstandardisissuedunderthefixeddesignationE2171;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisstandardaddressestheidentificationofdataele-mentsfromtheEHRdefinitionsinPracticeE1384thathaveordinalscalevaluesetsandwhichcanbefurtherdefinedtohavescale-freemeasurementproperties.ItisapplicabletodatarecordedfortheElectronicHealthRecordanditspapercounterparts.Itisalsoapplicabletoabstracteddatafromthepatientrecordthatoriginatesfromthesesamedataelements.ItisapplicabletoidentifyingthelocationwithintheEHRwheretheobservedmeasurementsshallbestoredandwhatisthemeaningofthestoreddata.Itdoesnotaddresseithertheusesortheinterpretationsofthestoredmeasurements.2.ReferencedDocuments2.1ASTMStandards:2E177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE456TerminologyRelatingtoQualityandStatisticsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE1169PracticeforConductingRuggednessTestsE1384PracticeforContentandStructureoftheElectronicHealthRecord(EHR)3.Terminology3.1Definitions—FulldefinitionsanddiscussionofScale-FreeMeasurementTermsaregiveninAnnexA1.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1adaptivemeasurement—advantageofmeasurementtoaccountformissingdata.3.2.2additivity—ratingscaleadherencetoassociativityandcommutability.3.2.3biasanalysis—investigationofconsiderationsrelativetosubjectorareaofperformance.3.2.4calibration—processofestablishingadditivityandreproducabilityofadataset.3.2.5concatenation—processofmeasurementusesenumer-atedphysicalunitquantitiesequaltothemagnitudeofthemeasureditem.3.2.6construct—nameoftheconceptualdomainmeasured.3.2.7convergence—closingofthediffe...
