filter_in_observation
filter_in_observation(table, cdm, *, index_date)Keep only rows where index_date falls within an observation period.
Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| table | Any | Ibis table with person_id or subject_id and index_date column. | required |
| cdm | Cdm | CDM reference (observation_period). | required |
| index_date | str | Column name for index date. | required |
Returns
| Name | Type | Description |
|---|---|---|
| ibis.expr.types.Table | Table with only rows in observation. |