birth_mother to visit_occurrence

%%{init: {'theme': 'base' } }%%
%%{init: {'theme': 'base' } }%%
flowchart LR
    subgraph Source
        mother_finngenid
        mother_age
    end

    subgraph CDM-OMOP-v5.4
        person_id
        visit_start_date
    end

    mother_finngenid-->person_id
    mother_age-->visit_start_date

Destination Field	Source field	Logic	Comment field
visit_occurrence_id		Incremental integer. Unique value per mother_finngenid + 100000000000 (offset).	Generated
person_id	finngenid	person_id from person table where person_source_value equals mother_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	mother_age	approx_delivery_date is calculated as by adding mother_age to approx_birth_date from finngenid_info table.	Calculated NOTE: At the moment MOTHER_AGE has a precision of +/-3 days. Hence, the exacta date may not be precise.
visit_start_datetime		Calculated from visit_start_date with time 00:00:0000	Calculated
visit_end_date		copied from approx_delivery_date	Copied
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		String build as “SOURCE=BIRTH_MOTHER;INDEX=”	Calculated
visit_source_concept_id		omop_concept_id from fg_codes_info where source equals “BIRTH_MOTHER”	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