This is a value set defined by the FHIR project.
This value set contains 31 concepts
Expansion based on EvidenceClassifier v4.3.0 (CodeSystem)
All codes in this table are from the system http://terminology.hl7.org/CodeSystem/evidence-classifier-code
Code Display Definition
COVID19Relevant COVID-19 relevant (but not specific) article Not about COVID-19 but relevant to COVID-19 management or understanding.
COVID19HumanResearch COVID-19 human data in population, exposure, or outcome contains human COVID-19 disease in the research data as any variable (population, exposure or outcome).
OriginalResearch Article includes original research such as randomized trial, observational study.
ResearchSynthesis Article includes synthesis of research such as systematic review, meta-analysis, rapid review.
Guideline Article includes guideline for clinical practice guidelines.
ResearchProtocol Article provides protocol without results for research protocols.
NotResearchNotGuideline Article is neither research nor guideline for things that are not research reports, research protocols or guidelines.
Treatment Article about treatment about therapeutic interventions.
Diagnosis Article about diagnosis about methods to distinguish having or not having a condition.
PrognosisPrediction Article about prognosis or prediction about predicting risk for something or risk factors for it.
RatedAsYes Rated as yes, affirmative, positive, present, or include
RatedAsNo Rated as no, negative, absent, or exclude Rated as no, negative, absent, or exclude.
NotAssessed Not rated, not assessed Neither rated as yes nor rated as no.
RatedAsRCT classified as randomized controlled trial classified as randomized controlled trial.
RatedAsControlledTrial classified as nonrandomized controlled trial (experimental) classified as nonrandomized controlled trial (experimental).
RatedAsComparativeCohort classified as comparative cohort study (observational) classified as comparative cohort study (observational).
RatedAsOther classified as other concept (not elsewhere classified) classified as other concept (not elsewhere classified).
RiskOfBias Risk of bias assessment Risk of bias assessment.
NoITT No intention-to-treat analysis No intention-to-treat analysis.
Preprint Preprint (not final publication) Results presented in preprint (pre-final publication) form.
BaselineImbalance Baseline imbalances Differences between groups at start of trial may confound or bias the findings.
Lvl A few code lists that FHIR defines are hierarchical - each code is assigned a level. For value sets, levels are mostly used to organize codes for user convenience, but may follow
code system hierarchy - see
Code System for further information
Source The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
Display The display (used in the
display element of a
Coding). If there is no display, implementers should not simply display the code, but map the concept into their application