Generated Narrative: StructureDefinition profile-EvidenceVariable Name Flags Card. Type Description & Constraints EvidenceVariable 0..* EvidenceVariable(4.0.1) A population, intervention, or exposure definition #xD; Slices for extension 0..* Extension Extension Slice: Unordered, Open by value:url #xD; extension:versionAlgorithm 0..1 string, Coding R5: How to compare versions (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.versionAlgorithm Binding: R5VersionAlgorithmForR4 (0.1.0) (extensible) #xD; extension:experimental 0..1 boolean R5: For testing purposes, not real usage (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.experimental #xD; extension:purpose 0..1 markdown R5: Why this EvidenceVariable is defined (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.purpose #xD; extension:copyright 0..1 markdown R5: Use and/or publishing restrictions (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.copyright #xD; extension:copyrightLabel 0..1 string R5: Copyright holder and year(s) (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.copyrightLabel #xD; extension:approvalDate 0..1 date R5: When the resource was approved by publisher (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.approvalDate #xD; extension:lastReviewDate 0..1 date R5: When the resource was last reviewed by the publisher (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.lastReviewDate #xD; extension:effectivePeriod 0..1 Period R5: When the resource is expected to be used (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.effectivePeriod #xD; extension:actual 0..1 boolean R5: Actual or conceptual (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.actual #xD; extension:handling 0..1 code R5: continuous | dichotomous | ordinal | polychotomous (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.handling Binding: R5VariableHandlingForR4 (0.1.0) (required) #xD; extension:category 0..* (Complex) R5: A grouping for ordinal or polychotomous variables (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.category #xD; characteristic #xD; Slices for extension 1..* Extension Extension Slice: Unordered, Open by value:url #xD; extension:linkId 0..1 id R5: Label for internal linking (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.linkId #xD; extension:note 0..* Annotation R5: Used for footnotes or explanatory notes (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.note #xD; extension:definitionReference 0..1 Reference(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4(0.1.0) | EvidenceVariable | Cross-version Profile for R5.Group for use in FHIR R4(0.1.0) | Group | Cross-version Profile for R5.Evidence for use in FHIR R4(0.1.0) | Evidence) R5: Defines the characteristic (without using type and value) by a Reference (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionReference #xD; extension:definitionCanonical 0..1 canonical(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4(0.1.0) | EvidenceVariable | Cross-version Profile for R5.Evidence for use in FHIR R4(0.1.0) | Evidence) R5: Defines the characteristic (without using type and value) by a Canonical (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionCanonical #xD; extension:definitionCodeableConcept 0..1 CodeableConcept R5: Defines the characteristic (without using type and value) by a CodeableConcept (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionCodeableConcept #xD; extension:definitionExpression 0..1 Expression R5: Defines the characteristic (without using type and value) by an expression (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionExpression #xD; extension:definitionId 0..1 id R5: Defines the characteristic (without using type and value) by an id (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionId #xD; extension:definitionByTypeAndValue 0..1 (Complex) R5: Defines the characteristic using type and value (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionByTypeAndValue #xD; extension:definitionByCombination 0..1 (Complex) R5: Used to specify how two or more characteristics are combined (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionByCombination #xD; extension:characteristic 1..* (Complex) R5: A defining factor of the characteristic (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic #xD; extension:instances 0..1 Quantity, Range R5: Number of occurrences meeting the characteristic (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.instances #xD; extension:duration 0..1 Quantity, Range R5: Length of time in which the characteristic is met (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.duration #xD; timeFromStart #xD; Slices for extension 0..* Extension Extension Slice: Unordered, Open by value:url #xD; extension:description 0..1 markdown R5: Human readable description (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.timeFromEvent.description #xD; extension:note 0..* Annotation R5: Used for footnotes or explanatory notes (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.timeFromEvent.note #xD; extension:event 0..1 CodeableConcept, Reference(), dateTime, id R5: The event used as a base point (reference point) in time (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.timeFromEvent.event Binding: R5EvidenceVariableEventForR4 (0.1.0) (example) #xD; extension:quantity 0..1 Quantity R5: Used to express the observation at a defined amount of time before or after the event (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.timeFromEvent.quantity #xD; extension:range 0..1 Range R5: Used to express the observation within a period before and/or after the event (new) URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.timeFromEvent.range #xD; Documentation for this format
Cross-version Profile for R5.EvidenceVariable for use in FHIR R4
This cross-version profile allows R5 EvidenceVariable content to be represented via FHIR R4 EvidenceVariable resources.
A population, intervention, or exposure definition
The EvidenceVariable resource describes a "PICO" element that knowledge (evidence, assertion, recommendation) is about.
PICO stands for Population (the population within which exposures are being compared), Intervention (the conditional state or exposure state being described for its effect on outcomes), Comparison (the alternative conditional state or alternative exposure state being compared against), and Outcome (the result or effect of the intervention in the population).
If the resource is contained in another resource, it SHALL NOT contain nested Resources
not(parent::f:contained and f:contained)
If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource
contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
not(exists(for $id in f:contained/*/f:id/@value return $contained[not(parent::*/descendant::f:reference/@value=concat('#', $contained/*/id/@value) or descendant::f:reference[@value='#'])]))
If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated
contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))
If a resource is contained in another resource, it SHALL NOT have a security label
When a resource has no narrative, only systems that fully understand the data can display the resource to a human safely. Including a human readable representation in the resource makes for a much more robust eco-system and cheaper handling of resources by intermediary systems. Some ecosystems restrict distribution of resources to only those systems that do fully understand the resources, and as a consequence implementers may believe that the narrative is superfluous. However experience shows that such eco-systems often open up to new participants over time.
A resource should have narrative for robust management
Name should be usable as an identifier for the module by machine processing applications such as code generation
not(exists(f:name/@value)) or matches(f:name/@value, '[A-Z]([A-Za-z0-9_]){0,254}')
The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
The only time that a resource does not have an id is when it is being submitted to the server using a create operation.
The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
All FHIR elements must have a @value or children
hasValue() or (children().count() > id.count())
A set of rules under which this content was created
A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
The base language in which the resource is written.
Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Text summary of the resource, for human interpretation
A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.
Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.
This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
Must have either extensions or value[x], not both
exists(f:extension)!=exists(f:*[starts-with(local-name(.), "value")])
R5: `EvidenceVariable.versionAlgorithm[x]` (new:Coding, string)
Element `EvidenceVariable.versionAlgorithm[x]` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.versionAlgorithm[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 is newer, and a 0 if the version ordering can't successfully be determined.
exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])
R5: For testing purposes, not real usage (new)
R5: `EvidenceVariable.experimental` (new:boolean)
Element `EvidenceVariable.experimental` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.experimental` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Why this EvidenceVariable is defined (new)
R5: `EvidenceVariable.purpose` (new:markdown)
Element `EvidenceVariable.purpose` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.purpose` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). This element does not describe the usage of the EvidenceVariable. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this EvidenceVariable.
R5: Use and/or publishing restrictions (new)
R5: `EvidenceVariable.copyright` (new:markdown)
Element `EvidenceVariable.copyright` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.copyright` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: `EvidenceVariable.copyrightLabel` (new:string)
Element `EvidenceVariable.copyrightLabel` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.copyrightLabel` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element.
R5: When the resource was approved by publisher (new)
R5: `EvidenceVariable.approvalDate` (new:date)
Element `EvidenceVariable.approvalDate` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.approvalDate` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: When the resource was last reviewed by the publisher (new)
R5: `EvidenceVariable.lastReviewDate` (new:date)
Element `EvidenceVariable.lastReviewDate` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.lastReviewDate` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). If specified, this date follows the original approval date. See guidance around (not) making local changes to elements [here](https://hl7.org/fhir/canonicalreso.html#localization).
R5: When the resource is expected to be used (new)
R5: `EvidenceVariable.effectivePeriod` (new:Period)
Element `EvidenceVariable.effectivePeriod` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.effectivePeriod` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). The effective period for an EvidenceVariable determines when the content is applicable for usage and is independent of publication and review dates. For example, a variable intended to be used for the year 2016 might be published in 2015. See guidance around (not) making local changes to elements [here](https://hl7.org/fhir/canonicalreso.html#localization).
R5: `EvidenceVariable.actual` (new:boolean)
Element `EvidenceVariable.actual` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.actual` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: continuous | dichotomous | ordinal | polychotomous (new)
R5: `EvidenceVariable.handling` (new:code)
Element `EvidenceVariable.handling` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.handling` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: A grouping for ordinal or polychotomous variables (new)
R5: `EvidenceVariable.category` (new:BackboneElement)
Element `EvidenceVariable.category` has a context of EvidenceVariable based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.category` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R4/extensibility.html#modifierExtension).
Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Canonical identifier for this evidence variable, represented as a URI (globally unique)
An absolute URI that is used to identify this evidence variable when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this evidence variable is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the evidence variable is stored on different servers.
Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred. Multiple instances may share the same URL if they have a distinct version. The determination of when to create a new version of a resource (same url, new version) vs. defining a new artifact is up to the author. Considerations for making this decision are found in [Technical and Business Versions](http://hl7.org/fhir/R4/resource.html#versions). In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the [meta.source](http://hl7.org/fhir/R4/resource.html#meta) element to indicate where the current master source of the resource can be found.
Allows the evidence variable to be referenced by a single globally unique identifier.
Additional identifier for the evidence variable
A formal identifier that is used to identify this evidence variable when it is represented in other formats, or referenced in a specification, model, design or an instance.
Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this evidence variable outside of FHIR, where it is not possible to use the logical URI.
Allows externally provided and/or usable business identifiers to be easily associated with the module.
Business version of the evidence variable
The identifier that is used to identify this version of the evidence variable when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the evidence variable author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts.
There may be different evidence variable instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the evidence variable with the format [url]|[version].
Name for this evidence variable (computer friendly)
A natural language name identifying the evidence variable. This name should be usable as an identifier for the module by machine processing applications such as code generation.
The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.
Support human navigation and code generation.
Name for this evidence variable (human friendly)
A short, descriptive, user-friendly title for the evidence variable.
This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.
The short title provides an alternate title for use in informal descriptive contexts where the full, formal title is not necessary.
Need to be able to reference the content by a short description, but still provide a longer, more formal title for the content.
Subordinate title of the EvidenceVariable
An explanatory or alternate title for the EvidenceVariable giving additional information about its content.
The status of this evidence variable. Enables tracking the life-cycle of the content.
Allows filtering of evidence variables that are appropriate for use versus not.
This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
The date (and optionally time) when the evidence variable was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the evidence variable changes.
Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the evidence variable. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.
Name of the publisher (organization or individual)
The name of the organization or individual that published the evidence variable.
Usually an organization but may be an individual. The publisher (or steward) of the evidence variable is the organization or individual primarily responsible for the maintenance and upkeep of the evidence variable. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the evidence variable. This item SHOULD be populated unless the information is available from context.
Helps establish the "authority/credibility" of the evidence variable. May also allow for contact.
Contact details to assist a user in finding and communicating with the publisher.
May be a web site, an email address, a telephone number, etc.
Natural language description of the evidence variable
A free text natural language description of the evidence variable from a consumer's perspective.
This description can be used to capture details such as why the evidence variable was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the evidence variable as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the evidence variable is presumed to be the predominant language in the place the evidence variable was created).
A human-readable string to clarify or explain concepts about the resource.
The context that the content is intended to support
The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate evidence variable instances.
When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.
Assist in searching for appropriate content.
Intended jurisdiction for evidence variable (if applicable)
A legal or geographic region in which the evidence variable is intended to be used.
It may be possible for the evidence variable to be used in jurisdictions other than those for which it was originally designed or intended.
Countries and regions within which this artifact is targeted for use.
A copyright statement relating to the evidence variable and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the evidence variable.
Consumers must be able to determine any legal restrictions on the use of the evidence variable and/or its content.
When the evidence variable was approved by publisher
The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.
The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.
When the evidence variable was last reviewed
The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date.
If specified, this date follows the original approval date.
Gives a sense of how "current" the content is. Resources that have not been reviewed in a long time may have a risk of being less appropriate/relevant.
When the evidence variable is expected to be used
The period during which the evidence variable content was or is planned to be in active use.
The effective period for a evidence variable determines when the content is applicable for usage and is independent of publication and review dates. For example, a measure intended to be used for the year 2016 might be published in 2015.
Allows establishing a transition before a resource comes into effect and also allows for a sunsetting process when new versions of the evidence variable are or are expected to be used instead.
The category of the EvidenceVariable, such as Education, Treatment, Assessment, etc.
Descriptive topics related to the content of the EvidenceVariable. Topics provide a high-level categorization grouping types of EvidenceVariables that can be useful for filtering and searching.
Repositories must be able to determine how to categorize the EvidenceVariable so that it can be found by topical searches.
High-level categorization of the definition, used for searching, sorting, and filtering.
An individiual or organization primarily involved in the creation and maintenance of the content.
An individual or organization primarily responsible for internal coherence of the content.
An individual or organization primarily responsible for review of some aspect of the content.
.participation[typeCode=VRF] {not clear whether VRF best corresponds to reviewer or endorser}
An individual or organization responsible for officially endorsing the content for use in some setting.
Additional documentation, citations, etc.
Related artifacts such as additional documentation, justification, or bibliographic references.
Each related artifact is either an attachment, or a reference to another resource, but not both.
EvidenceVariables must be able to provide enough information for consumers of the content (and/or interventions or results produced by the content) to be able to determine and understand the justification for and evidence in support of the content.
The type of evidence element, a population, an exposure, or an outcome.
The possible types of variables for exposures or outcomes (E.g. Dichotomous, Continuous, Descriptive).
What defines the members of the evidence element
A characteristic that defines the members of the evidence element. Multiple characteristics are applied with "and" semantics.
Characteristics can be defined flexibly to accommodate different use cases for membership criteria, ranging from simple codes, all the way to using an expression language to express the criteria.
Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
R5: `EvidenceVariable.characteristic.linkId` (new:id)
Element `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Used for footnotes or explanatory notes (new)
R5: `EvidenceVariable.characteristic.note` (new:Annotation)
Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Defines the characteristic (without using type and value) by a Reference (new)
R5: `EvidenceVariable.characteristic.definitionReference` (new:Reference(EvidenceVariable,Group,Evidence))
Element `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Defines the characteristic (without using type and value) by a Canonical (new)
R5: `EvidenceVariable.characteristic.definitionCanonical` (new:canonical(EvidenceVariable,Evidence))
Element `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Defines the characteristic (without using type and value) by a CodeableConcept (new)
R5: `EvidenceVariable.characteristic.definitionCodeableConcept` (new:CodeableConcept)
Element `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Defines the characteristic (without using type and value) by an expression (new)
R5: `EvidenceVariable.characteristic.definitionExpression` (new:Expression)
Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
R5: Defines the characteristic (without using type and value) by an id (new)
R5: `EvidenceVariable.characteristic.definitionId` (new:id)
Element `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Defines the characteristic using type and value (new)
R5: `EvidenceVariable.characteristic.definitionByTypeAndValue` (new:BackboneElement)
Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Used to specify how two or more characteristics are combined (new)
R5: `EvidenceVariable.characteristic.definitionByCombination` (new:BackboneElement)
Element `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: A defining factor of the characteristic (new)
R5: `EvidenceVariable.characteristic.definitionByCombination.characteristic` (new:EvidenceVariable.characteristic)
Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Number of occurrences meeting the characteristic (new)
R5: `EvidenceVariable.characteristic.instances[x]` (new:Quantity, Range)
Element `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Length of time in which the characteristic is met (new)
R5: `EvidenceVariable.characteristic.duration[x]` (new:Quantity, Range)
Element `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Extensions that cannot be ignored even if unrecognized
May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Natural language description of the characteristic
A short, natural language description of the characteristic that could be used to communicate the criteria to an end-user.
Need to be able to describe characteristics in natural language so that end users can understand the criteria.
What code or expression defines members?
Define members of the evidence element using Codes (such as condition, medication, or observation), Expressions ( using an expression language such as FHIRPath or CQL) or DataRequirements (such as Diabetes diagnosis onset in the last year).
Need to be able to define members in simple codes when the membership aligns well with terminology, with common criteria such as observations in a value set or lab tests within a year, or with expression language to support criteria that do not fit in the above.
Use UsageContext to define the members of the population, such as Age Ranges, Genders, Settings.
Need to be able to define members more structurally when more information can be communicated such as age range.
Whether the characteristic includes or excludes members
When true, members with this characteristic are excluded from the element.
Indicates what effective period the study covers.
Indicates duration from the participant's study entry.
Extensions are always sliced by (at least) url
R5: `EvidenceVariable.characteristic.timeFromEvent.description` (new:markdown)
Element `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: `EvidenceVariable.characteristic.timeFromEvent.note` (new:Annotation)
Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: The event used as a base point (reference point) in time (new)
R5: `EvidenceVariable.characteristic.timeFromEvent.event[x]` (new:CodeableConcept, dateTime, id, Reference)
Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Used to express the observation at a defined amount of time before or after the event (new)
R5: `EvidenceVariable.characteristic.timeFromEvent.quantity` (new:Quantity)
Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
R5: Used to express the observation within a period before and/or after the event (new)
R5: `EvidenceVariable.characteristic.timeFromEvent.range` (new:Range)
Element `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Numerical value (with implicit precision)
The value of the measured amount. The value includes an implicit precision in the presentation of the value.
The implicit precision in the value should always be honored. Monetary values have their own rules for handling precision (refer to standard accounting text books).
Precision is handled implicitly in almost all cases of measurement.
PQ.value, CO.value, MO.value, IVL.high or IVL.low depending on the value
< | <= | >= | > - how to understand the value
How the value should be understood and represented - whether the actual value is greater or less than the stated value due to measurement issues; e.g. if the comparator is "<" , then the real value is < stated value.
Need a framework for handling measures where the value is <5ug/L or >400mg/L due to the limitations of measuring methodology.
If there is no comparator, then there is no modification of the value
This is labeled as "Is Modifier" because the comparator modifies the interpretation of the value significantly. If there is no comparator, then there is no modification of the value
How the Quantity should be understood and represented.
There are many representations for units of measure and in many contexts, particular representations are fixed and required. I.e. mcg for micrograms.
The identification of the system that provides the coded form of the unit.
Need to know the system that defines the coded form of the unit.
CO.codeSystem, PQ.translation.codeSystem
A computer processable form of the unit in some unit representation system.
The preferred system is UCUM, but SNOMED CT can also be used (for customary units) or ISO 4217 for currency. The context of use may additionally require a code from a particular system.
Need a computable form of the unit that is fixed across all forms. UCUM provides this for quantities, but SNOMED CT provides many units of interest.
PQ.code, MO.currency, PQ.translation.code
mean | median | mean-of-mean | mean-of-median | median-of-mean | median-of-median
Indicates how elements are aggregated within the study effective period.
Possible group measure aggregates (E.g. Mean, Median).