1. From the University of Cincinnati Neuroscience Institute, OH (O.A., P.K., P.A.S., A.M.P., J.P.B.); Departments of Emergency Medicine (O.A., P.A.S., A.M.P.), Neurosurgery (O.A.), Radiology (T.T.), and Neurology (P.K., J.P.B.), University of Cincinnati, OH; Division of Biostatistics and Epidemiology, Cincinnati Children’s Hospital Medical Center, OH (H.S., J.K.); and Division of Biostatistics, Medical University of South Carolina, Charleston, SC (Y.P.).