purch to visit_occurrence

%%{init: {'theme': 'base' } }%%
%%{init: {'theme': 'base' } }%%
flowchart LR
    subgraph Source
        finngenid
        approx_event_day
        index
        source
    end

    fg_codes_info[[fg_codes_info]]

    subgraph CDM-OMOP-v5.4
        person_id
        visit_start_date
        visit_end_date
        visit_source_value
        visit_source_concept_id
    end

    finngenid-->person_id
    source-->visit_source_value
    approx_event_day-->visit_start_date
    approx_event_day-->visit_end_date
    index-->visit_source_value
    fg_codes_info-->visit_source_concept_id

    source-->fg_codes_info

Destination Field	Source field	Logic	Comment field
visit_occurrence_id		Incremental integer. Unique value per combination of source+index	Generated
person_id	finngenid	person_id from person table where person_source_value equals finngenid	Calculated
visit_concept_id		concept_id_2 from concept_relationship table where concept_id_1 equals visit_source_concept_id and relationship_id equals “Maps to”.	Calculated NOTE: 0 when visit_source_concept_id is NULL
visit_start_date	approx_event_day	Copied from approx_event_day	Calculated
visit_start_datetime		Calculated from visit_start_date with time 00:00:0000	Calculated
visit_end_date	approx_event_day	Copied from approx_event_day	Calculated NOTE: There is no visit_end_date in the source data, it is set same as visit_start_date
visit_end_datetime		Calculated from visit_end_date with time 00:00:0000	Calculated
visit_type_concept_id		Set 32879 - ‘Registry’ for all	Calculated
provider_id		Set 0 for all	Info not available
care_site_id		Set 0 for all	Info not available
visit_source_value	source index	String build as “SOURCE=source;INDEX=index”	Calculated
visit_source_concept_id	source	omop_concept_id from fg_codes_info where source equals “PURCH”	Calculated using the fg_codes_info table
admitted_from_concept_id		Set 0 for all	Info not available
admitted_from_source_value		Set NULL for all	Info not available
discharged_to_concept_id		Set 0 for all	Info not available
discharged_to_source_value		Set NULL for all	Info not available
preceding_visit_occurrence_id		Set 0 for all	Info not available