RT Journal Article SR Electronic T1 Overview of the Role of Statistic Analysis in the Design of Spine-related Studies JF International Journal of Spine Surgery JO Int J Spine Surg FD International Society for the Advancement of Spine Surgery SP 26 OP 29 DO 10.1016/SASJ-2009-Comment1 VO 3 IS 1 A1 Ohnmeiss, Donna D. YR 2009 UL https://www.ijssurgery.com/content/3/1/26.abstract AB