<status value="draft"/><experimental value="false"/><date value="2020-12-28T16:55:11+11:00"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><description value="Evidence focus characteristic code."/><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/focus-characteristic-code"/><content value="complete"/><concept><code value="citation"/><display value="Citation"/><definition value="Used to reference a specific article."/></concept><concept><code value="clinical-outcomes-observed"/><display value="Observed outcomes are clinical outcomes"/><definition value="Used to denote a focus on clinical outcomes, ie evidence variable in role of outcome (measured variable) as observed is considered a "clinical outcome" (patient-important outcome such as mortality, symptoms, function or quality of life)."/></concept><concept><code value="population"/><display value="Population"/><definition value="The population of interest."/></concept><concept><code value="exposure"/><display value="Exposure"/><definition value="The exposure of interest, such as an intervention."/></concept><concept><code value="comparator"/><display value="Comparator"/><definition value="The comparator (intervention or control state) of interest."/></concept><concept><code value="outcome"/><display value="Outcome"/><definition value="the outcome of interest."/></concept><concept><code value="medication-exposures"/><display value="Medication exposures"/><definition value="Any medication exposures. A subset of exposures or interventions that are medications."/></concept><concept><code value="study-type"/><display value="Study type"/><definition value="Type of research study, such as randomized trial or case-control study."/></concept></CodeSystem>

This code system http://terminology.hl7.org/CodeSystem/focus-characteristic-code defines the following codes:

Code	Display	Definition
citation	Citation	Used to reference a specific article.
clinical-outcomes-observed	Observed outcomes are clinical outcomes	Used to denote a focus on clinical outcomes, ie evidence variable in role of outcome (measured variable) as observed is considered a "clinical outcome" (patient-important outcome such as mortality, symptoms, function or quality of life).
population	Population	The population of interest.
exposure	Exposure	The exposure of interest, such as an intervention.
comparator	Comparator	The comparator (intervention or control state) of interest.
outcome	Outcome	the outcome of interest.
medication-exposures	Medication exposures	Any medication exposures. A subset of exposures or interventions that are medications.
study-type	Study type	Type of research study, such as randomized trial or case-control study.