Table name: visit_occurrence
Reading from covid19_tpp_gp_clinical and covid19_tpp_gp_scripts
We assume that a person can have only one gp visit per day. To get all the visits, we take the union of covia19_tpp_gp_clinical and covia19_tpp_gp_scripts. Then we map each unique combination of eid and event_dt/issue_date as visit. If the event_dt or issue_date is not given, no visit is created.
| Destination Field | Source field | Logic | Comment field |
|---|---|---|---|
| visit_occurrence_id | eid covia19_tpp_gp_clinical.event_dt covia19_tpp_gp_scripts.issue_date | Concatenate ‘5’, eid and the date in YYYYMMDD format | |
| person_id | eid | ||
| visit_concept_id | 38004453 - Family Practice | ||
| visit_start_date | covia19_tpp_gp_clinical.event_dt covia19_tpp_gp_scripts.issue_date | If 1902-02-02 or 1903-03-3, set date to yob-07-01 (field 34 in baseline) | |
| visit_start_datetime | covia19_tpp_gp_clinical.event_dt covia19_tpp_gp_scripts.issue_date | ||
| visit_end_date | covia19_tpp_gp_clinical.event_dt covia19_tpp_gp_scripts.issue_date | If 1902-02-02 or 1903-03-3, set date to yob-07-01 (field 34 in baseline) | |
| visit_end_datetime | covia19_tpp_gp_clinical.event_dt covia19_tpp_gp_scripts.issue_date | ||
| visit_type_concept_id | 32827 - ‘EHR encounter record’ | ||
| provider_id | |||
| care_site_id | |||
| visit_source_value | |||
| visit_source_concept_id | |||
| admitting_source_concept_id | |||
| admitting_source_value | |||
| discharge_to_concept_id | |||
| discharge_to_source_value | |||
| preceding_visit_occurrence_id | |||
| data_source | covid19 gp_tpp |