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. 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. If the element is present, it must have either a @value, an @id, or extensions An absolute URI that is used to identify this evidence 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 an authoritative instance of this summary is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the summary is stored on different servers. A formal identifier that is used to identify this summary when it is represented in other formats, or referenced in a specification, model, design or an instance. The identifier that is used to identify this version of the summary when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the summary 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. Indicates the mechanism used to compare versions to determine which is more current. A natural language name identifying the evidence. This name should be usable as an identifier for the module by machine processing applications such as code generation. A short, descriptive, user-friendly title for the summary. Display of the suggested method of how to cite this Evidence. The status of this summary. Enables tracking the life-cycle of the content. A Boolean value to indicate that this resource is authored for testing purposes (or education/evaluation/marketing) and no version of this resource will ever be intended for genuine usage. The date (and optionally time) when the summary was last significantly changed. 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 summary changes. 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 on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date. An individiual, organization, or device primarily involved in the creation and maintenance of the content. The name of the organization or individual responsible for the release and ongoing maintenance of the evidence. Contact details to assist a user in finding and communicating with the publisher. Who entered the data for the evidence. An individiual, organization, or device primarily responsible for internal coherence of the content. An individiual, organization, or device primarily responsible for review of some aspect of the content. An individiual, organization, or device responsible for officially endorsing the content for use in some setting. 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 instances. Explanation of why this Evidence is needed and why it has been designed as it has. A copyright statement relating to the Evidence and/or its contents. Copyright statements are legal notices of intellectual property ownership and may include restrictions on the use and publishing of the Evidence. A short string (<50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are restricted. (e.g. 'All rights reserved', 'Some rights reserved'). Relationships that this Evidence has with other FHIR or non-FHIR resources that already exist. A natural language summary of the evidence. Declarative description of the Evidence, such as conclusion or bottom line statement. Footnotes and/or explanatory notes. Description, classification, and definition of a single variable. The collection of variables defines what the evidence is about. The design of the synthesis (combination of studies) that produced this evidence. The design is described with any number of synthesis characteristics, such as type of meta-analysis. The design of the study that produced this evidence. The design is described with any number of study design characteristics. Values and parameters for a single statistic. Assessment of certainty, confidence in the estimates, or quality of the evidence. 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. The type of relationship to the related artifact. The artifact that is related to this Evidence Resource. 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. A text description or summary of the variable. Footnotes and/or explanatory notes. Classification of the role of the variable. Sub-classification of the role of the variable. The reference value used for comparison. Definition of the actual variable related to the statistic(s), i.e., the population being the actual study sample or the measured variable (exposure, outcome, or covariate) being the actual observation that occurred or will occur in the study. Definition of the intended variable related to the Evidence, i.e., the population, exposure, or outcome for which the statistical finding is being interpreted. Indication of quality of match between intended variable to actual variable. 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. A natural language summary of the statistic. Footnotes and/or explanatory notes. Type of statistic, e.g., relative risk. The statistic type is a classification that formally defines the relationship between the variables (noted in Evidence.variableDefinition) and the value specification (noted in Evidence.statistic.quantity). When the measured variable (outcome) is handled categorically, the category element is used to define which category the statistic is reporting. Statistic value. The number of events associated with the statistic, where the unit of analysis is different from numberAffected, sampleSize.knownDataCount and sampleSize.numberOfParticipants. The number of participants affected where the unit of analysis is the same as sampleSize.knownDataCount and sampleSize.numberOfParticipants. Count of participants in the study sample. A statistical attribute of the statistic such as a measure of heterogeneity. A component of the method to generate the statistic. 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. Human-readable summary of study sample size. A human-readable string to clarify or explain concepts about the sample size. Footnote or explanatory note about the sample size. Count of studies or samples combined to become the total sample for the statistic. Count of members in the total sample for the statistic. Number of participants with known results for measured variables. Total number of participants who were analayzed. 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. Human-readable summary of the estimate. Footnote or explanatory note about the estimate. The type of attribute estimate, e.g., confidence interval or p value. The singular quantity of the attribute estimate, for attribute estimates represented as single values, which may include a unit of measure. Use 0.95 for a 95% confidence interval. Lower and upper bound values of the attribute estimate. A nested attribute estimate; which is the attribute estimate of an attribute estimate. 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. Description of a component of the method to generate the statistic. Further specification of the value of the component of the method to generate the statistic. The plan for analysis. This model characteristic is part of the analysis that was applied, whether or not the analysis followed the plan. A variable adjusted for in the adjusted analysis. An attribute of the model characteristic. 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. Description and definition of the variable. How the variable is classified for use in adjusted analysis. Qualitative label used for grouping values of a dichotomous, ordinal, or polychotomous variable. Quantitative label used for grouping values of a dichotomous, ordinal, or polychotomous variable. Range of quantitative labels used for grouping values of a dichotomous, ordinal, or polychotomous variable. 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. Textual description of certainty. Footnotes and/or explanatory notes. Aspect of certainty being rated. Assessment or judgement of the aspect. Individual or group who did the rating. A domain or subdomain of certainty. Population Exposure Outcome Covariate If the element is present, it must have either a @value, an @id, or extensions