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. 2012 Oct 11;20(1):164–171. doi: 10.1136/amiajnl-2012-001050

Figure 1.

Figure 1

Overview of the transformation process that converts the Utah Population Database (UPDB) to Utah Population Database Limited (UPDBL). The details have been abstracted, showing the general flow from identifiable data sources (top figure) to a de-identified, flat data structure (bottom figure) accessible to the UPDBL query tool (lower right). AHRQ, Agency for Healthcare Research and Quality; ICD, International Classification of Diseases; SEER, Surveillance, Epidemiology, and End Results. This figure is only reproduced in colour in the online version.