![Supplement 1: The Patient-Reported Outcomes Measurement Information System (PROMIS): Overview and Developmental Work, 2004–2006 || Practical Issues in the Application of Item Response Theory: A Demonstration Using Items from the Pediatric Quality of Life Inventory (PedsQL) 4.0 Generic Core Scales]()
Supplement 1: The Patient-Reported Outcomes Measurement Information System (PROMIS): Overview and Developmental Work, 2004–2006 || Practical Issues in the Application of Item Response Theory: A Demonstration Using Items from the Pediatric Quality of Life Inventory (PedsQL) 4.0 Generic Core ScalesCheryl D. Hill, Michael C. Edwards, David Thissen, Michelle M. Langer, R. J. Wirth, Tasha M. Burwinkle and James W. Varni · Medical Care · 2007