This page is part of the Evidence Based Medicine on FHIR Implementation Guide (v1.0.0-ballot: STU1 Ballot 1) based on FHIR (HL7® FHIR® Standard) v5.0.0. . For a full list of available versions, see the Directory of published versions

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Extension: VariableDefinitionComparatorCategory

Official URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition-comparator-category				Version: 1.0.0-ballot
Standards status: Draft			Maturity Level: 1	Computable Name: VariableDefinitionComparatorCategory

The reference value used for comparison.

Context of Use

This extension may be used on the following element(s):

• Element ID Evidence.variableDefinition

Usage info

Usage:

• Use this Extension: EvidenceR6
• Examples for this Extension: ComparativeEvidence_Bypass_surgery_effects_on_Myocardial_infarction_or_stroke_in_Swedish_Obese_Subjects_SOS_study, ComparativeEvidence_Bypass_surgery_effects_on_Remission_of_diabetes_in_JAMA_2018_Norwegian_cohort_study, ComparativeEvidence_Bypass_surgery_effects_on_New_onset_depression_in_JAMA_2018_Norwegian_cohort_study, ComparativeEvidence_Bypass_surgery_effects_on_Treatment_with_opioids_in_JAMA_2018_Norwegian_cohort_study... Show 33 more, ComparativeEvidence_Bypass_surgery_effects_on_Additional_GI_surgical_procedure_in_JAMA_2018_Norwegian_cohort_study, ComparativeBaselineMeasureEvidence_Age_in_2018_Norwegian_Cohort_Surgical_Group_vs_Medical_Group, ComparativeBaselineMeasureEvidence_BMI_in_2018_Norwegian_Cohort_Surgical_Group_vs_Medical_Group, NetEffectEstimate_Bariatric_Surgery_Example_for_GIN_2022, NetEffectContribution_All_cause_mortality_for_Example_for_GIN_2022, NetEffectContribution_Nonfatal_myocardial_infarction_or_stroke_for_Example_for_GIN_2022, NetEffectContribution_Remission_of_diabetes_for_Example_for_GIN_2022, NetEffectContribution_New_onset_depression_for_Example_for_GIN_2022, NetEffectContribution_Treatment_with_opioids_for_Example_for_GIN_2022, NetEffectContribution_Additional_GI_surgical_procedure_for_Example_for_GIN_2022, ComparativeParticipantFlow_Dropout_due_to_stopping_intervention_Lofexidine_vs_Placebo_in_opioid_detoxification_trial, ADAS_Cog11_EndpointAnalysisPlan_from_PHUSE_Lilly_Redacted_Protocol_EBMonFHIR_IG_Version, CIBIC_EndpointAnalysisPlan_from_PHUSE_Lilly_Redacted_Protocol_EBMonFHIR_IG_Version, Example_EndpointAnalysisPlan_from_PHUSE_Lilly_Redacted_Protocol_EBMonFHIR_IG_Version, ComparativeEvidence_Bariatric_Surgery_effect_for_ADA_triple_outcome_at_5_years_Diabetes_Surgery_Study, MeanDiffA1c2016metaAnalysis, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Mingrone_2012_DIBASY_trial, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Mingrone_2015_DIBASY_trial, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Parikh_2014, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Courcoulas_2014, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Ding_2015, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Halperin_2014, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Ikramuddin_2013, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Liang_2013, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Schauer_2012_STAMPEDE_trial, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Cummings_2016, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Dixon_2008, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Ikramuddin_2015, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Wentworth_2014, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Courcoulas_2015, ComparativeEvidence_Mean_difference_in_HbA1c_between_Surgery_and_Medical_Lifestyle_groups_in_Schauer_2014_STAMPEDE_trial, AllCauseMortality2022metaAnalysis and Critically_appraised_summary_of_primary_outcome_of_multi_platform_RCT_of_anticoagulation_for_non_critically_ill_patients_with_COVID_19

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

 

Other representations of profile: CSV, Excel, Schematron

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()