What specific dimension requires extreme precision when modeling clinical events in a CDW?
Answer
The time dimension (actual time the event occurred, not just entry date)
A crucial lesson learned through the longevity of health data warehousing emphasizes the importance of precise temporal modeling. Practitioners are advised to model the time dimension with extreme care, focusing not merely on the date a record was electronically entered into the system, but rather the precise temporal context of the clinical event itself, such as the exact time a medication was administered or a blood sample was drawn. This high level of granularity is essential for accurately correlating clinical interventions with rapidly evolving patient states in retrospective analysis.
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