Fig. 3.

The discovery user interface (UI) finding patients across the hospital with a diagnosis of epilepsy and recurrent seizures. The figure illustrates not only the power of distributed query, but also the nature of a modular, scalable federated network, in that the three hospitals are at different stages of data contribution. The Cincinnati Children’s Hospital Medical Center has made its full corpus of electronic health record (EHR) data available for query. The Children’s Hospital of Philadelphia and Boston Children’s Hospital have only made data available for consented biobank cohorts. Note—both of the latter hospitals are committed to making the full EHR cohort available during 2019.