Properties
| Name | Required | Type | Description | 
|---|---|---|---|
| url | No | uri | Canonical identifier for this evidence variable, represented as a URI (globally unique) | 
| identifier | No | Identifier[] | Additional identifier for the evidence variable | 
| version | No | string | Business version of the evidence variable | 
| name | No | string | Name for this evidence variable (computer friendly) | 
| title | No | string | Name for this evidence variable (human friendly) | 
| shortTitle | No | string | Title for use in informal contexts | 
| subtitle | No | string | Subordinate title of the EvidenceVariable | 
| status | Yes | code | draft / active / retired / unknown | 
| date | No | dateTime | Date last changed | 
| publisher | No | string | Name of the publisher (organization or individual) | 
| contact | No | ContactDetail[] | Contact details for the publisher | 
| description | No | markdown | Natural language description of the evidence variable | 
| note | No | Annotation[] | Used for footnotes or explanatory notes | 
| useContext | No | UsageContext[] | The context that the content is intended to support | 
| jurisdiction | No | CodeableConcept[] | Intended jurisdiction for evidence variable (if applicable) | 
| copyright | No | markdown | Use and/or publishing restrictions | 
| approvalDate | No | date | When the evidence variable was approved by publisher | 
| lastReviewDate | No | date | When the evidence variable was last reviewed | 
| effectivePeriod | No | Period | When the evidence variable is expected to be used | 
| topic | No | CodeableConcept[] | The category of the EvidenceVariable, such as Education, Treatment, Assessment, etc. | 
| author | No | ContactDetail[] | Who authored the content | 
| editor | No | ContactDetail[] | Who edited the content | 
| reviewer | No | ContactDetail[] | Who reviewed the content | 
| endorser | No | ContactDetail[] | Who endorsed the content | 
| relatedArtifact | No | RelatedArtifact[] | Additional documentation, citations, etc. | 
| type | No | code | dichotomous / continuous / descriptive | 
| characteristic | Yes | EvidenceVariableCharacteristic | What defines the members of the evidence element | 
| - id | No | string | Unique id for inter-element referencing | 
| - extension | No | Extension[] | Additional content defined by implementations | 
| - modifierExtension | No | Extension[] | Extensions that cannot be ignored even if unrecognized | 
| - description | No | string | Natural language description of the characteristic | 
| - definition[x] | Yes | Reference<Group>, canonical, CodeableConcept, Expression, DataRequirement, TriggerDefinition | What code or expression defines members? | 
| - usageContext | No | UsageContext[] | What code/value pairs define members? | 
| - exclude | No | boolean | Whether the characteristic includes or excludes members | 
| - participantEffective[x] | No | dateTime, Period, Duration, Timing | What time period do participants cover | 
| - timeFromStart | No | Duration | Observation time from study start | 
| - groupMeasure | No | code | mean / median / mean-of-mean / mean-of-median / median-of-mean / median-of-median | 
Search Parameters
| Name | Type | Description | Expression | 
|---|---|---|---|
| composed-of | reference | What resource is being referenced | EvidenceVariable.relatedArtifact | 
| context | token | A use context assigned to the evidence variable | EvidenceVariable.useContext.value | 
| context-quantity | quantity | A quantity- or range-valued use context assigned to the evidence variable | EvidenceVariable.useContext.value | 
| context-type | token | A type of use context assigned to the evidence variable | EvidenceVariable.useContext.code | 
| date | date | The evidence variable publication date | EvidenceVariable.date | 
| depends-on | reference | What resource is being referenced | EvidenceVariable.relatedArtifact | 
| derived-from | reference | What resource is being referenced | EvidenceVariable.relatedArtifact | 
| description | string | The description of the evidence variable | EvidenceVariable.description | 
| effective | date | The time during which the evidence variable is intended to be in use | EvidenceVariable.effectivePeriod | 
| identifier | token | External identifier for the evidence variable | EvidenceVariable.identifier | 
| jurisdiction | token | Intended jurisdiction for the evidence variable | EvidenceVariable.jurisdiction | 
| name | string | Computationally friendly name of the evidence variable | EvidenceVariable.name | 
| predecessor | reference | What resource is being referenced | EvidenceVariable.relatedArtifact | 
| publisher | string | Name of the publisher of the evidence variable | EvidenceVariable.publisher | 
| status | token | The current status of the evidence variable | EvidenceVariable.status | 
| successor | reference | What resource is being referenced | EvidenceVariable.relatedArtifact | 
| title | string | The human-friendly name of the evidence variable | EvidenceVariable.title | 
| topic | token | Topics associated with the EvidenceVariable | EvidenceVariable.topic | 
| url | uri | The uri that identifies the evidence variable | EvidenceVariable.url | 
| version | token | The business version of the evidence variable | EvidenceVariable.version | 
| context-type-quantity | composite | A use context type and quantity- or range-based value assigned to the evidence variable | EvidenceVariable.useContext | 
| context-type-value | composite | A use context type and value assigned to the evidence variable | EvidenceVariable.useContext | 
Inherited Properties
| Name | Required | Type | Description | 
|---|---|---|---|
| id | No | string | Logical id of this artifact | 
| meta | No | Meta | Metadata about the resource | 
| implicitRules | No | uri | A set of rules under which this content was created | 
| language | No | code | Language of the resource content | 
| text | No | Narrative | Text summary of the resource, for human interpretation | 
| contained | No | Resource[] | Contained, inline Resources | 
| extension | No | Extension[] | Additional content defined by implementations | 
| modifierExtension | No | Extension[] | Extensions that cannot be ignored | 

