documentation:cdm:condition_era
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documentation:cdm:condition_era [2014/12/05 21:12] cgreich created |
documentation:cdm:condition_era [2017/01/25 21:13] cgreich |
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| The condition_concept_id field contains Concepts that are identical to those of the CONDITION_OCCURRENCE table records that make up the Condition Era. In contrast to Drug Eras, Condition Eras are not aggregated to contain Conditions of different hierarchical layers. | The condition_concept_id field contains Concepts that are identical to those of the CONDITION_OCCURRENCE table records that make up the Condition Era. In contrast to Drug Eras, Condition Eras are not aggregated to contain Conditions of different hierarchical layers. | ||
| The Condition Era Start Date is the start date of the first Condition Occurrence. | The Condition Era Start Date is the start date of the first Condition Occurrence. | ||
| - | The Condition Era End Date is the end date of the last Condition Occurrence. | + | The Condition Era End Date is the end date of the last Condition Occurrence. |
| + | * Condition Eras are built with a Persistence Window of 30 days, meaning, if no occurence of the same condition_concept_id happens within 30 days of any one occurrence, it will be considered the condition_era_end_date. | ||
documentation/cdm/condition_era.txt · Last modified: 2017/09/25 15:09 by clairblacketer
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