<status value="draft"/> <useContext> <code> <system value="http://terminology.hl7.org/CodeSystem/usage-context-type"/> <code value="focus"/> </code> <valueCodeableConcept> <text value="Stroke"/> </valueCodeableConcept> </useContext> <actual value="true"/> <characteristic> <description value="mRS 0-2 at 90 days"/> <definitionExpression> <description value="mRS 0-2"/> <language value="text/cql"/> <expression value="["Observation": code in "75859-9|LOINC"] mRS where mRS.value between 0 and 2"/> </definitionExpression> <timeFromStart> <quantity> <value value="90"/> <unit value="day"/> <system value="http://unitsofmeasure.org"/> <code value="d"/> </quantity> </timeFromStart> </characteristic> <handling value="dichotomous"/> </EvidenceVariable>

"mRS 0-2 at 90 days" is an outcome, defined by a CQL expression, used in expressing what an Evidence is about.