The OBSERVATION_PERIOD table contains records which uniquely define the spans of time for which a Person is at-risk to have clinical events recorded within the source systems, even if no events in fact are recorded (healthy patient with no healthcare interactions).
|A unique identifier for each observation period.
|A foreign key identifier to the person for whom the observation period is defined. The demographic details of that person are stored in the person table.
|The start date of the observation period for which data are available from the data source.
|The end date of the observation period for which data are available from the data source.
|A foreign key identifier to the predefined concept in the Standardized Vocabularies reflecting the source of the observation period information