1. Department of Emergency Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA
2. Analytical Partners Consulting, LLC, Raleigh, NC, USA
3. Department of Biostatistics, University of North Carolina at Chapel Hill Gillings School of Public Health, Chapel Hill, NC, USA
4. Department of Psychiatry and UNC Palliative Care Program, University of North Carolina School of Medicine, Chapel Hill, NC, USA
5. Division of Geriatric Medicine and UNC Palliative Care Program, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA
6. Quantworks, Inc, Carrboro, NC, USA