Table 2:
OMOP’s CONCEPT_RELATIONSHIP table example showing sample concepts.
| CONCEPT_1 | RELATIONSHIP* | CONCEPT_2 |
|---|---|---|
| Incision of chest wall | is_a | Incision of chest wall and pleura |
| Exploratory thoracotomy | is_a | Incision of chest wall and pleura |
| Creation of pleuroperitoneal shunt | is_a | Incision of chest wall and pleura |
| Incision of chest wall and pleura | is_a | Operations on chest wall, pleura, mediastinum, and diaphragm |
| Operations on chest wall, pleura, mediastinum, and diaphragm | is_a | Operations on respiratory system |
*
The reverse relationships (“subsumes”) are not shown. Relationship is shown directly as a description rather than as relationship ID.