CDM Table name: OBSERVATION_PERIOD (CDM v5.3 / v5.4)
Reading from hes_hospital,hes_episodes.
Use the hes_hospital & hes_episodes tables to populate the observation_period table.
Figure.1
| Destination Field | Source field | Logic | Comment field |
|---|---|---|---|
| observation_period_id | Autogenerate | ||
| person_id | patid | ||
| observation_period_start_date | hes_hospital.admidate, hes_episodes.epistart | use the earliest of (hes_hospital.admidate, hes_episodes.epistart) that is not null. | |
| observation_period_end_date | hes_hospital.discharged, hes_episodes.epiend | use the latest of (hes_hospital.discharged, hes_episodes.epiend) that is not null | |
| period_type_concept_id | 32880 - Standard algorithm |