DAF Research Implementation Guide v2.0.0 (STU2)
This page is part of the Data Access Framework (v2.0.0: STU 2) based on FHIR R3. . For a full list of available versions, see the Directory of published versions 
The next few sections identify the profiles used by DAF-Research and capability statements specific to DAF-Research along with resource/data element mappings between FHIR and PCORnet CDM and between FHIR and OMOP CDM.
The following is a list of DAF-Research defined profiles and operations that are used for implementing PCORnet actors and capabilities along with their workflow requirements.
| DAF-Research Profiles and Operations | Usage |
|---|---|
| DAF-Task | The profile is used to satisfy PCORnet workflow requirements for data extraction, data mart loading, submitting queries and returning results. The profile only assigns the Supported flag and adjusts cardinalities based on PCOR requirements. These requirements and usage patterns are outlined in the Implementation Guidance section of the IG. |
| DAF-Provenance | The profile is used to keep track of provenance data for data mart loading, submitting queries and getting results back. The resource is used to track when the data was refreshed, by whom the data was changed for research purposes. The profile only assigns the Supported flag and adjusts cardinalities based on PCOR requirements. These requirements and usage patterns are outlined in the Implementation Guidance section of the IG. |
| DAF-OperationDefinition | The profile is used to publish what data models and what query formats are supported for each DAF-Research operation. The profile is used by DataMarts and ResearchQueryResponder to declare the data models and query formats supported by them to enable researcher operations. The profile only assigns the Supported flag and adjusts cardinalities based on PCOR requirements. These requirements and usage patterns are outlined in the Implementation Guidance section of the IG. |
| DAF-QueryResults | The profile is used to provide aggregate results to the Researcher who submits queries. The profile is used by ResearchQueryResponders to send the results of query execution back to the ResearchQueryRequesters. The profile only assigns the Supported flag and adjusts cardinalities based on PCOR requirements. These requirements and usage patterns are outlined in the Implementation Guidance section of the IG. |
| daf-extract-operation | The operation is used to extract data for all or a subset of patients from data sources using FHIR APIs or proprietary methods. |
| daf-load-operation | The operation is used to load data extracted from data sources in data marts. |
| daf-execute-query | The operation is used to execute a DAF-Research query and create query results. |
This paragraph identifies a list of profiles from US-Core that are reused by DAF-Research, along with ones explicitly defined by DAF-Research. In addition a few of the FHIR Resources are used without profiling currently. These resources may be profiled in the future depending on feedback obtained from DAF-Research pilots.
We are not profiling any of the US-Core profiles but may add if needed based on pilot feedback.
NOTE: Mappings from one data model to another such as FHIR to PCORnet CDM or FHIR to OMOP etc, always have a potential for data loss. In these cases where there is not an exact mapping between codes the extraction process is encouraged to include the actual raw values if permitted by the data model. For example in FHIR the Coding element can be used to accommodate all the local values which were used to translate to standardized codes.
| PCORnet CDM Table Name | Recommended Profile/Resource for Data Extraction |
|---|---|
| DIAGNOSIS, CONDITION | Condition |
| LAB_RESULT_CM | DiagnosticReport-Results,Observation |
| ENCOUNTER | Encounter |
| PRESCRIBING | MedicationOrder |
| DISPENSING | MedicationDispense |
| VITALS | Observation-Vitalsigns |
| DEMOGRAPHIC | Patient |
| PROCEDURES | Procedure |
| PRO CM | Questionaire,Observation |
| ENROLLMENT | ResearchSubject |
| PCORNET_TRIAL | ResearchStudy |
| DEATH | Patient |
| DEATH_CAUSE | Patient |
| HARVEST | DAF-CapabilityStatement |
A detailed data element level mapping can be accessed here:
| OMOP Table Name | Recommended Profile/Resource for Data Extraction |
|---|---|
| Concept,Vocabulary,Domain,Concept_Synonym,Concept_Ancestor | ValueSet |
| Concept_Class | Concept |
| Concept_Relationship, Relationship | ConceptMap |
| Cohort_Definition, Attribute_Definition | Group |
| Specimen | Specimen |
| Drug_Strength | Medication |
| Procedure_Occurence | Procedure |
| Drug_Exposure | MedicationOrder,MedicationStatement,Immunization |
| Device_Exposure | Procedure,Device |
| Measurement,Note,Observation | Observation |
| Person | Patient |
| Observation_Period, Visit_Occurence | Encounter |
| Condition_Occurence | Condition |
A detailed data element level mapping can be accessed here:
DAF Research v2.0.0 (STU2) © FHIR STU3 Version: 3.0.1 (IG Publisher v3.0.0-11681) generated on Fri, Apr 21, 2017 08:00+1000. |
