This is a code system defined by the FHIR project.
This code system http://terminology.hl7.org/CodeSystem/evidence-classifier-code defines the following codes:
Code
Display
Definition
COVID19Specific
COVID-19 specific article
About COVID-19.
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.
PreventionAndControl
Article about prevention and control
about preventive care and 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).
RatedAsCaseControl
classified as case-control study
classified as case-control study.
RatedAsUncontrolledSeries
classified as uncontrolled cohort (case series)
classified as uncontrolled cohort (case series).
RatedAsMixedMethods
classified as mixed-methods study
classified as mixed-methods study.
RatedAsOther
classified as other concept (not elsewhere classified)
classified as other concept (not elsewhere classified).
RiskOfBias
Risk of bias assessment
Risk of bias assessment.
NoBlinding
No blinding
No blinding.
AllocConcealNotStated
Allocation concealment not stated
Allocation concealment not stated.
EarlyTrialTermination
Early trial termination
Early trial termination.
NoITT
No intention-to-treat analysis
No intention-to-treat analysis.
Preprint
Preprint (not final publication)
Results presented in preprint (pre-final publication) form.
PreliminaryAnalysis
Preliminary analysis
Preliminary analysis.
BaselineImbalance
Baseline imbalances
Differences between groups at start of trial may confound or bias the findings.
SubgroupAnalysis
Subgroup analysis
Subgroup analysis.
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')