From *Columbia University, College of Physicians and Surgeons, New York, NY; †International Center for Health Outcomes and Innovation Research, College of Physicians and Surgeons and the Joseph L. Mailman School of Public Health, Columbia University and New York Presbyterian Hospital, New York, NY; ‡New York Orthopaedic Hospital, New York Presbyterian Medical Center, New York, NY; and §Division of Pediatric Orthopaedics, Department of Orthopaedic Surgery, Columbia University, College of Physicians and Surgeons, New York, NY.