When did the realization of needing a specialized analytical structure emerge?
Answer
Mid-to-late 1990s
The shift from applying general DW principles to building a specialized Clinical Data Warehouse was not instantaneous. It began to materialize conceptually in the mid-to-late 1990s. This timing coincided with the broader industry acceptance of the DW concept alongside the increasing availability and volume of patient data being captured within nascent Electronic Health Record (EHR) systems, creating both the technological possibility and the necessity for specialized clinical analysis.
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