documentation:cdm:observation_period
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documentation:cdm:observation_period [2014/11/19 22:29] cgreich |
documentation:cdm:observation_period [2017/09/25 15:00] clairblacketer |
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| - | ===== OBSERVATION_PERIOD ===== | + | ===== OBSERVATION_PERIOD table ===== |
| + | **THIS IS OUTDATED. All documentation is now on the [[https://github.com/OHDSI/CommonDataModel/wiki|github wiki]]. Please refer there or to the [[projects:workgroups:cdm-wg|CDM working group]] for more information** | ||
| 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). | 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). | ||
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| * For EHR data, the observation period cannot be determined explicitly, because patients usually do not announce their departure from a certain healthcare provider. The ETL will have to apply some heuristic to make a reasonable guess on what the observation_period should be. Refer to the ETL documentation for details. | * For EHR data, the observation period cannot be determined explicitly, because patients usually do not announce their departure from a certain healthcare provider. The ETL will have to apply some heuristic to make a reasonable guess on what the observation_period should be. Refer to the ETL documentation for details. | ||
| - | ~~DISQUS~~ | ||
documentation/cdm/observation_period.txt · Last modified: 2017/09/25 15:00 by clairblacketer
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