RT Journal Article SR Electronic T1 Letter to the Editor: Positioning Rasch Analysis in Modern Clinical Evidence Grading JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP S85 OP S86 DO 10.14444/8678 VO 18 IS S2 A1 Baron, David A. YR 2024 UL https://www.ijssurgery.com/content/18/S2/S85.abstract AB