Pre Loaded Field Lists, Description and Help
field_lists_df.RdA dataframe with the name of available field lists, a short description, their length, the fields included, and a help link.
Usage
data(field_lists_df)Examples
field_lists_df
#> names
#> all_fields all_fields
#> core_info_fields core_info_fields
#> extended_info_fields extended_info_fields
#> identification_and_status_fields identification_and_status_fields
#> study_design_arms_groups_and_interventions_fields study_design_arms_groups_and_interventions_fields
#> outcome_measures_info_fields outcome_measures_info_fields
#> eligibility_fields eligibility_fields
#> participant_flow_fields participant_flow_fields
#> baseline_characteristics_fields baseline_characteristics_fields
#> outcome_measures_results_fields outcome_measures_results_fields
#> registration_fields registration_fields
#> results_fields results_fields
#> for_netmeta for_netmeta
#> for_explorer for_explorer
#> description
#> all_fields All queriable field names
#> core_info_fields Smallest election of relevant fields providing complete overview of the study without including the results
#> extended_info_fields Large selection of fields from all registration data elements (information recorded before study began and no results)
#> identification_and_status_fields Fields including study identification, study status, sponsor, regulatory oversight, relevant health condition and a brief summary and detailed description
#> study_design_arms_groups_and_interventions_fields Information about the study design, number of arms or groups, and types of interventions involved.
#> outcome_measures_info_fields Information about all outcome measures used
#> eligibility_fields Information regarding eligibility requirements
#> participant_flow_fields Information regarding the progress of participants through each stage of a study
#> baseline_characteristics_fields Information regarding the baseline measures and data collected in the study
#> outcome_measures_results_fields Information regarding the outcomes measured and statistical analyses performed as well as the resulting values.
#> registration_fields Large selection of registration data elements fields, these elements are all uploaded before the study is completed
#> results_fields Large selection of results data elements fields.
#> for_netmeta Focused on study results
#> for_explorer Optimised for use with shiny app in rctexplorer
#> fields
#> all_fields Acronym, AgreementOtherDetails, AgreementPISponsorEmployee, AgreementRestrictionType, AgreementRestrictiveAgreement, ArmGroupDescription, ArmGroupInterventionName, ArmGroupLabel, ArmGroupType, AvailIPDComment, AvailIPDId, AvailIPDType, AvailIPDURL, BaselineCategoryTitle, BaselineClassDenomCountGroupId, BaselineClassDenomCountValue, BaselineClassDenomUnits, BaselineClassTitle, BaselineDenomCountGroupId, BaselineDenomCountValue, BaselineDenomUnits, BaselineGroupDescription, BaselineGroupId, BaselineGroupTitle, BaselineMeasureCalculatePct, BaselineMeasureDenomCountGroupId, BaselineMeasureDenomCountValue, BaselineMeasureDenomUnits, BaselineMeasureDenomUnitsSelected, BaselineMeasureDescription, BaselineMeasureDispersionType, BaselineMeasureParamType, BaselineMeasurePopulationDescription, BaselineMeasureTitle, BaselineMeasureUnitOfMeasure, BaselineMeasurementComment, BaselineMeasurementGroupId, BaselineMeasurementLowerLimit, BaselineMeasurementSpread, BaselineMeasurementUpperLimit, BaselineMeasurementValue, BaselinePopulationDescription, BaselineTypeUnitsAnalyzed, BioSpecDescription, BioSpecRetention, BriefSummary, BriefTitle, CentralContactEMail, CentralContactName, CentralContactPhone, CentralContactPhoneExt, CentralContactRole, CollaboratorClass, CollaboratorName, CompletionDate, CompletionDateType, Condition, ConditionAncestorId, ConditionAncestorTerm, ConditionBrowseBranchAbbrev, ConditionBrowseBranchName, ConditionBrowseLeafAsFound, ConditionBrowseLeafId, ConditionBrowseLeafName, ConditionBrowseLeafRelevance, ConditionMeshId, ConditionMeshTerm, DelayedPosting, DesignAllocation, DesignInterventionModel, DesignInterventionModelDescription, DesignMasking, DesignMaskingDescription, DesignObservationalModel, DesignPrimaryPurpose, DesignTimePerspective, DesignWhoMasked, DetailedDescription, DispFirstPostDate, DispFirstPostDateType, DispFirstSubmitDate, DispFirstSubmitQCDate, EligibilityCriteria, EnrollmentCount, EnrollmentType, EventGroupDeathsNumAffected, EventGroupDeathsNumAtRisk, EventGroupDescription, EventGroupId, EventGroupOtherNumAffected, EventGroupOtherNumAtRisk, EventGroupSeriousNumAffected, EventGroupSeriousNumAtRisk, EventGroupTitle, EventsDescription, EventsFrequencyThreshold, EventsTimeFrame, ExpAccTypeIndividual, ExpAccTypeIntermediate, ExpAccTypeTreatment, ExpandedAccessNCTId, ExpandedAccessStatusForNCTId, FDAAA801Violation, FlowAchievementComment, FlowAchievementGroupId, FlowAchievementNumSubjects, FlowAchievementNumUnits, FlowDropWithdrawComment, FlowDropWithdrawType, FlowGroupDescription, FlowGroupId, FlowGroupTitle, FlowMilestoneComment, FlowMilestoneType, FlowPeriodTitle, FlowPreAssignmentDetails, FlowReasonComment, FlowReasonGroupId, FlowReasonNumSubjects, FlowReasonNumUnits, FlowRecruitmentDetails, FlowTypeUnitsAnalyzed, Gender, GenderBased, GenderDescription, HasExpandedAccess, HealthyVolunteers, IPDSharing, IPDSharingAccessCriteria, IPDSharingDescription, IPDSharingInfoType, IPDSharingTimeFrame, IPDSharingURL, InterventionAncestorId, InterventionAncestorTerm, InterventionArmGroupLabel, InterventionBrowseBranchAbbrev, InterventionBrowseBranchName, InterventionBrowseLeafAsFound, InterventionBrowseLeafId, InterventionBrowseLeafName, InterventionBrowseLeafRelevance, InterventionDescription, InterventionMeshId, InterventionMeshTerm, InterventionName, InterventionOtherName, InterventionType, IsFDARegulatedDevice, IsFDARegulatedDrug, IsPPSD, IsUSExport, IsUnapprovedDevice, Keyword, LargeDocDate, LargeDocFilename, LargeDocHasICF, LargeDocHasProtocol, LargeDocHasSAP, LargeDocLabel, LargeDocTypeAbbrev, LargeDocUploadDate, LastKnownStatus, LastUpdatePostDate, LastUpdatePostDateType, LastUpdateSubmitDate, LeadSponsorClass, LeadSponsorName, LimitationsAndCaveatsDescription, LocationCity, LocationContactEMail, LocationContactName, LocationContactPhone, LocationContactPhoneExt, LocationContactRole, LocationCountry, LocationFacility, LocationState, LocationStatus, LocationZip, MaximumAge, MinimumAge, NCTId, NCTIdAlias, OfficialTitle, OrgClass, OrgFullName, OrgStudyId, OrgStudyIdDomain, OrgStudyIdLink, OrgStudyIdType, OtherEventAssessmentType, OtherEventNotes, OtherEventOrganSystem, OtherEventSourceVocabulary, OtherEventStatsGroupId, OtherEventStatsNumAffected, OtherEventStatsNumAtRisk, OtherEventStatsNumEvents, OtherEventTerm, OtherOutcomeDescription, OtherOutcomeMeasure, OtherOutcomeTimeFrame, OutcomeAnalysisCILowerLimit, OutcomeAnalysisCILowerLimitComment, OutcomeAnalysisCINumSides, OutcomeAnalysisCIPctValue, OutcomeAnalysisCIUpperLimit, OutcomeAnalysisCIUpperLimitComment, OutcomeAnalysisDispersionType, OutcomeAnalysisDispersionValue, OutcomeAnalysisEstimateComment, OutcomeAnalysisGroupDescription, OutcomeAnalysisGroupId, OutcomeAnalysisNonInferiorityComment, OutcomeAnalysisNonInferiorityType, OutcomeAnalysisOtherAnalysisDescription, OutcomeAnalysisPValue, OutcomeAnalysisPValueComment, OutcomeAnalysisParamType, OutcomeAnalysisParamValue, OutcomeAnalysisStatisticalComment, OutcomeAnalysisStatisticalMethod, OutcomeAnalysisTestedNonInferiority, OutcomeCategoryTitle, OutcomeClassDenomCountGroupId, OutcomeClassDenomCountValue, OutcomeClassDenomUnits, OutcomeClassTitle, OutcomeDenomCountGroupId, OutcomeDenomCountValue, OutcomeDenomUnits, OutcomeGroupDescription, OutcomeGroupId, OutcomeGroupTitle, OutcomeMeasureAnticipatedPostingDate, OutcomeMeasureCalculatePct, OutcomeMeasureDenomUnitsSelected, OutcomeMeasureDescription, OutcomeMeasureDispersionType, OutcomeMeasureParamType, OutcomeMeasurePopulationDescription, OutcomeMeasureReportingStatus, OutcomeMeasureTimeFrame, OutcomeMeasureTitle, OutcomeMeasureType, OutcomeMeasureTypeUnitsAnalyzed, OutcomeMeasureUnitOfMeasure, OutcomeMeasurementComment, OutcomeMeasurementGroupId, OutcomeMeasurementLowerLimit, OutcomeMeasurementSpread, OutcomeMeasurementUpperLimit, OutcomeMeasurementValue, OverallOfficialAffiliation, OverallOfficialName, OverallOfficialRole, OverallStatus, OversightHasDMC, PatientRegistry, Phase, PointOfContactEMail, PointOfContactOrganization, PointOfContactPhone, PointOfContactPhoneExt, PointOfContactTitle, PrimaryCompletionDate, PrimaryCompletionDateType, PrimaryOutcomeDescription, PrimaryOutcomeMeasure, PrimaryOutcomeTimeFrame, ReferenceCitation, ReferencePMID, ReferenceType, RemovedCountry, ResponsiblePartyInvestigatorAffiliation, ResponsiblePartyInvestigatorFullName, ResponsiblePartyInvestigatorTitle, ResponsiblePartyOldNameTitle, ResponsiblePartyOldOrganization, ResponsiblePartyType, ResultsFirstPostDate, ResultsFirstPostDateType, ResultsFirstSubmitDate, ResultsFirstSubmitQCDate, RetractionPMID, RetractionSource, SamplingMethod, SecondaryId, SecondaryIdDomain, SecondaryIdLink, SecondaryIdType, SecondaryOutcomeDescription, SecondaryOutcomeMeasure, SecondaryOutcomeTimeFrame, SeeAlsoLinkLabel, SeeAlsoLinkURL, SeriousEventAssessmentType, SeriousEventNotes, SeriousEventOrganSystem, SeriousEventSourceVocabulary, SeriousEventStatsGroupId, SeriousEventStatsNumAffected, SeriousEventStatsNumAtRisk, SeriousEventStatsNumEvents, SeriousEventTerm, StartDate, StartDateType, StatusVerifiedDate, StdAge, StudyFirstPostDate, StudyFirstPostDateType, StudyFirstSubmitDate, StudyFirstSubmitQCDate, StudyPopulation, StudyType, TargetDuration, UnpostedEventDate, UnpostedEventType, UnpostedResponsibleParty, VersionHolder, WhyStopped
#> core_info_fields NCTId, OverallStatus, CompletionDate, StudyType, BriefTitle, BriefSummary, Keyword, EnrollmentCount, EligibilityCriteria, LocationCountry, Condition, DesignAllocation, DesignPrimaryPurpose, DesignInterventionModel, ArmGroupLabel, ArmGroupType, InterventionType, InterventionName, InterventionDescription, IsFDARegulatedDrug, Phase, PrimaryOutcomeMeasure, PrimaryOutcomeTimeFrame, ResultsFirstPostDate
#> extended_info_fields NCTId, OrgStudyId, BriefTitle, Acronym, OfficialTitle, StudyType, OverallStatus, WhyStopped, StartDate, CompletionDate, ResponsiblePartyType, ResponsiblePartyInvestigatorFullName, LeadSponsorName, IsFDARegulatedDrug, IsFDARegulatedDevice, IsUnapprovedDevice, OversightHasDMC, BriefSummary, DetailedDescription, Condition, Keyword, DesignPrimaryPurpose, Phase, DesignInterventionModel, DesignInterventionModelDescription, DesignWhoMasked, DesignMasking, DesignMaskingDescription, DesignAllocation, EnrollmentCount, DesignObservationalModel, DesignTimePerspective, BioSpecRetention, BioSpecDescription, TargetDuration, ArmGroupLabel, ArmGroupType, ArmGroupDescription, InterventionType, InterventionName, InterventionDescription, PrimaryOutcomeMeasure, PrimaryOutcomeDescription, PrimaryOutcomeTimeFrame, SecondaryOutcomeMeasure, SecondaryOutcomeDescription, SecondaryOutcomeTimeFrame, OtherOutcomeMeasure, OtherOutcomeDescription, OtherOutcomeTimeFrame, Gender, GenderBased, GenderDescription, MinimumAge, MaximumAge, HealthyVolunteers, EligibilityCriteria, StudyPopulation, SamplingMethod, CentralContactName, CentralContactEMail, LocationCountry, LocationContactEMail, IPDSharing, IPDSharingURL
#> identification_and_status_fields NCTId, OrgStudyId, BriefTitle, Acronym, OfficialTitle, StudyType, OverallStatus, WhyStopped, StartDate, CompletionDate, ResponsiblePartyType, ResponsiblePartyInvestigatorFullName, LeadSponsorName, IsFDARegulatedDrug, IsFDARegulatedDevice, IsUnapprovedDevice, OversightHasDMC, BriefSummary, DetailedDescription, Condition, Keyword
#> study_design_arms_groups_and_interventions_fields NCTId, DesignPrimaryPurpose, Phase, DesignInterventionModel, DesignInterventionModelDescription, DesignWhoMasked, DesignMasking, DesignMaskingDescription, DesignAllocation, EnrollmentCount, DesignObservationalModel, DesignTimePerspective, BioSpecRetention, BioSpecDescription, TargetDuration, ArmGroupLabel, ArmGroupType, ArmGroupDescription, InterventionType, InterventionName, InterventionDescription
#> outcome_measures_info_fields NCTId, PrimaryOutcomeMeasure, PrimaryOutcomeDescription, PrimaryOutcomeTimeFrame, SecondaryOutcomeMeasure, SecondaryOutcomeDescription, SecondaryOutcomeTimeFrame, OtherOutcomeMeasure, OtherOutcomeDescription, OtherOutcomeTimeFrame
#> eligibility_fields NCTId, Gender, GenderBased, GenderDescription, MinimumAge, MaximumAge, HealthyVolunteers, EligibilityCriteria, StudyPopulation, SamplingMethod
#> participant_flow_fields NCTId, FlowRecruitmentDetails, FlowPreAssignmentDetails, FlowGroupTitle, FlowGroupDescription, FlowTypeUnitsAnalyzed, FlowPeriodTitle, FlowMilestoneComment, FlowMilestoneType, FlowAchievementNumSubjects, FlowAchievementNumUnits, FlowDropWithdrawType, FlowReasonNumSubjects, FlowReasonNumUnits, FlowReasonComment
#> baseline_characteristics_fields NCTId, BaselineGroupTitle, BaselineGroupDescription, BaselineDenomCountValue, BaselineDenomUnits, BaselineTypeUnitsAnalyzed, BaselinePopulationDescription, BaselineMeasureTitle, BaselineMeasureDescription, BaselineMeasureParamType, BaselineMeasureDispersionType, BaselineMeasureDenomCountValue, BaselineMeasureDenomUnits, BaselineMeasureDenomUnitsSelected, BaselineMeasurePopulationDescription, BaselineCategoryTitle, BaselineClassTitle, BaselineMeasurementValue, BaselineMeasureUnitOfMeasure
#> outcome_measures_results_fields NCTId, OutcomeMeasureType, OutcomeMeasureTitle, OutcomeMeasureDescription, OutcomeMeasureTimeFrame, OutcomeMeasureAnticipatedPostingDate, OutcomeGroupTitle, OutcomeGroupDescription, OutcomeDenomCountValue, OutcomeMeasureTypeUnitsAnalyzed, OutcomeDenomUnits, OutcomeMeasurePopulationDescription, OutcomeMeasureParamType, OutcomeMeasureDispersionType, OutcomeCategoryTitle, OutcomeClassTitle, OutcomeClassDenomCountValue, OutcomeClassDenomUnits, OutcomeMeasurementValue, OutcomeMeasureUnitOfMeasure, OutcomeAnalysisGroupId, OutcomeAnalysisGroupDescription, OutcomeAnalysisNonInferiorityType, OutcomeAnalysisTestedNonInferiority, OutcomeAnalysisNonInferiorityComment, OutcomeAnalysisPValue, OutcomeAnalysisPValueComment, OutcomeAnalysisStatisticalMethod, OutcomeAnalysisStatisticalComment, OutcomeAnalysisParamType, OutcomeAnalysisParamValue, OutcomeAnalysisCIPctValue, OutcomeAnalysisCINumSides, OutcomeAnalysisCILowerLimit, OutcomeAnalysisCIUpperLimit, OutcomeAnalysisDispersionType, OutcomeAnalysisDispersionValue, OutcomeAnalysisEstimateComment, OutcomeAnalysisOtherAnalysisDescription
#> registration_fields NCTId, OrgStudyId, BriefTitle, Acronym, OfficialTitle, StudyType, OverallStatus, WhyStopped, StartDate, CompletionDate, ResponsiblePartyType, ResponsiblePartyInvestigatorFullName, LeadSponsorName, IsFDARegulatedDrug, IsFDARegulatedDevice, IsUnapprovedDevice, OversightHasDMC, BriefSummary, DetailedDescription, Condition, Keyword, NCTId, DesignPrimaryPurpose, Phase, DesignInterventionModel, DesignInterventionModelDescription, DesignWhoMasked, DesignMasking, DesignMaskingDescription, DesignAllocation, EnrollmentCount, DesignObservationalModel, DesignTimePerspective, BioSpecRetention, BioSpecDescription, TargetDuration, ArmGroupLabel, ArmGroupType, ArmGroupDescription, InterventionType, InterventionName, InterventionDescription, NCTId, PrimaryOutcomeMeasure, PrimaryOutcomeDescription, PrimaryOutcomeTimeFrame, SecondaryOutcomeMeasure, SecondaryOutcomeDescription, SecondaryOutcomeTimeFrame, OtherOutcomeMeasure, OtherOutcomeDescription, OtherOutcomeTimeFrame, NCTId, Gender, GenderBased, GenderDescription, MinimumAge, MaximumAge, HealthyVolunteers, EligibilityCriteria, StudyPopulation, SamplingMethod
#> results_fields NCTId, NCTId, FlowRecruitmentDetails, FlowPreAssignmentDetails, FlowGroupTitle, FlowGroupDescription, FlowTypeUnitsAnalyzed, FlowPeriodTitle, FlowMilestoneComment, FlowMilestoneType, FlowAchievementNumSubjects, FlowAchievementNumUnits, FlowDropWithdrawType, FlowReasonNumSubjects, FlowReasonNumUnits, FlowReasonComment, NCTId, BaselineGroupTitle, BaselineGroupDescription, BaselineDenomCountValue, BaselineDenomUnits, BaselineTypeUnitsAnalyzed, BaselinePopulationDescription, BaselineMeasureTitle, BaselineMeasureDescription, BaselineMeasureParamType, BaselineMeasureDispersionType, BaselineMeasureDenomCountValue, BaselineMeasureDenomUnits, BaselineMeasureDenomUnitsSelected, BaselineMeasurePopulationDescription, BaselineCategoryTitle, BaselineClassTitle, BaselineMeasurementValue, BaselineMeasureUnitOfMeasure, NCTId, OutcomeMeasureType, OutcomeMeasureTitle, OutcomeMeasureDescription, OutcomeMeasureTimeFrame, OutcomeMeasureAnticipatedPostingDate, OutcomeGroupTitle, OutcomeGroupDescription, OutcomeDenomCountValue, OutcomeMeasureTypeUnitsAnalyzed, OutcomeDenomUnits, OutcomeMeasurePopulationDescription, OutcomeMeasureParamType, OutcomeMeasureDispersionType, OutcomeCategoryTitle, OutcomeClassTitle, OutcomeClassDenomCountValue, OutcomeClassDenomUnits, OutcomeMeasurementValue, OutcomeMeasureUnitOfMeasure, OutcomeAnalysisGroupId, OutcomeAnalysisGroupDescription, OutcomeAnalysisNonInferiorityType, OutcomeAnalysisTestedNonInferiority, OutcomeAnalysisNonInferiorityComment, OutcomeAnalysisPValue, OutcomeAnalysisPValueComment, OutcomeAnalysisStatisticalMethod, OutcomeAnalysisStatisticalComment, OutcomeAnalysisParamType, OutcomeAnalysisParamValue, OutcomeAnalysisCIPctValue, OutcomeAnalysisCINumSides, OutcomeAnalysisCILowerLimit, OutcomeAnalysisCIUpperLimit, OutcomeAnalysisDispersionType, OutcomeAnalysisDispersionValue, OutcomeAnalysisEstimateComment, OutcomeAnalysisOtherAnalysisDescription
#> for_netmeta NCTId, ArmGroupLabel, ArmGroupType, ArmGroupDescription, ArmGroupInterventionName, InterventionArmGroupLabel, InterventionName, InterventionType, InterventionDescription, InterventionMeshId, InterventionMeshTerm, PrimaryOutcomeMeasure, PrimaryOutcomeTimeFrame, SecondaryOutcomeMeasure, SecondaryOutcomeTimeFrame, OtherOutcomeMeasure, OutcomeMeasureTitle, OutcomeGroupTitle, OutcomeGroupDescription, OutcomeMeasureParamType, OutcomeMeasureDispersionType, OutcomeCategoryTitle, OutcomeClassTitle, OutcomeClassDenomCountValue, OutcomeClassDenomUnits, OutcomeMeasurementValue, OutcomeMeasureUnitOfMeasure, OutcomeAnalysisEstimateComment, OutcomeAnalysisDispersionType, OutcomeAnalysisDispersionValue, OutcomeAnalysisParamValue, OutcomeAnalysisParamType, OutcomeAnalysisDispersionValue, OutcomeAnalysisGroupId, OutcomeAnalysisGroupDescription, ResultsFirstPostDate, EnrollmentCount, IsFDARegulatedDrug, OverallStatus, Phase
#> for_explorer NCTId, OfficialTitle, BriefTitle, Acronym, StudyType, OverallStatus, StartDate, CompletionDate, LeadSponsorName, IsFDARegulatedDrug, IsFDARegulatedDevice, IsUnapprovedDevice, OversightHasDMC, Condition, Keyword, WhyStopped, DesignPrimaryPurpose, Phase, DesignInterventionModel, DesignMasking, DesignAllocation, EnrollmentCount, ArmGroupLabel, ArmGroupType, ArmGroupInterventionName, InterventionType, InterventionName, InterventionMeshId, InterventionMeshTerm, PrimaryOutcomeMeasure, PrimaryOutcomeTimeFrame, SecondaryOutcomeMeasure, SecondaryOutcomeTimeFrame, Gender, MinimumAge, MaximumAge, HealthyVolunteers, EligibilityCriteria, ResultsFirstPostDate, OutcomeAnalysisParamValue, OutcomeAnalysisParamType
#> length
#> all_fields 322
#> core_info_fields 24
#> extended_info_fields 65
#> identification_and_status_fields 21
#> study_design_arms_groups_and_interventions_fields 21
#> outcome_measures_info_fields 10
#> eligibility_fields 10
#> participant_flow_fields 15
#> baseline_characteristics_fields 19
#> outcome_measures_results_fields 39
#> registration_fields 62
#> results_fields 74
#> for_netmeta 40
#> for_explorer 41
#> help
#> all_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> core_info_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> extended_info_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> identification_and_status_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> study_design_arms_groups_and_interventions_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> outcome_measures_info_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> eligibility_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> participant_flow_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#resultDataElements
#> baseline_characteristics_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#resultDataElements
#> outcome_measures_results_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#resultDataElements
#> registration_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#regDataElements
#> results_fields https://clinicaltrials.gov/api/gui/ref/crosswalks#resultDataElements
#> for_netmeta
#> for_explorer