The Evidence Resource provides a machine-interpretable expression of an evidence concept including the evidence variables (e.g., population, exposures/interventions, comparators, outcomes, measured variables, confounding variables), the statistics, and the certainty of this evidence.

Evidence
url
Canonical identifier for this evidence, represented as a globally unique URI
identifier
Additional identifier for the summary
version
Business version of this summary
versionAlgorithm[x]
How to compare versions
name
Name for this summary (machine friendly)
title
Name for this summary (human friendly)
citeAs[x]
Citation for this evidence
status
draft | active | retired | unknown
experimental
For testing purposes, not real usage
date
Date last changed
approvalDate
When the summary was approved by publisher
lastReviewDate
When the summary was last reviewed by the publisher
publisher
Name of the publisher/steward (organization or individual)
contact
Contact details for the publisher
author
Who authored the content
editor
Who edited the content
reviewer
Who reviewed the content
endorser
Who endorsed the content
useContext
The context that the content is intended to support
purpose
Why this Evidence is defined
copyrightLabel
Copyright holder and year(s)
relatedArtifact
Link or citation to artifact associated with the summary
description
Description of the particular summary
assertion
Declarative description of the Evidence
note
Footnotes and/or explanatory notes
variableDefinition
Evidence variable such as population, exposure, or outcome
description
A text description or summary of the variable
note
Footnotes and/or explanatory notes
variableRole
population | subpopulation | exposure | referenceExposure | measuredVariable | confounder
observed
Definition of the actual variable related to the statistic(s)
intended
Definition of the intended variable related to the Evidence
directnessMatch
low | moderate | high | exact
synthesisType
The method to combine studies
studyDesign
The design of the study that produced this evidence
statistic
Values and parameters for a single statistic
description
Description of content
note
Footnotes and/or explanatory notes
statisticType
Type of statistic, e.g., relative risk
category
Associated category for categorical variable
quantity
Statistic value
numberOfEvents
The number of events associated with the statistic
numberAffected
The number of participants affected
sampleSize
Number of samples in the statistic
description
Textual description of sample size for statistic
note
Footnote or explanatory note about the sample size
numberOfStudies
Number of contributing studies
numberOfParticipants
Cumulative number of participants
knownDataCount
Number of participants with known results for measured variables
attributeEstimate
An attribute of the Statistic
description
Textual description of the attribute estimate
note
Footnote or explanatory note about the estimate
type
The type of attribute estimate, e.g., confidence interval or p value
quantity
The singular quantity of the attribute estimate, for attribute estimates represented as single values; also used to report unit of measure
level
Level of confidence interval, e.g., 0.95 for 95% confidence interval
range
Lower and upper bound values of the attribute estimate
attributeEstimate
A nested attribute estimate; which is the attribute estimate of an attribute estimate
modelCharacteristic
An aspect of the statistical model
code
Model specification
value
Numerical value to complete model specification
variable
A variable adjusted for in the adjusted analysis
variableDefinition
Description of the variable
handling
continuous | dichotomous | ordinal | polychotomous
valueCategory
Description for grouping of ordinal or polychotomous variables
valueQuantity
Discrete value for grouping of ordinal or polychotomous variables
valueRange
Range of values for grouping of ordinal or polychotomous variables
attributeEstimate
An attribute of the statistic used as a model characteristic
certainty
Certainty or quality of the evidence
description
Textual description of certainty
note
Footnotes and/or explanatory notes
type
Aspect of certainty being rated
rating
Assessment or judgement of the aspect
rater
Individual or group who did the rating
subcomponent
A domain or subdomain of certainty