1. Defining Substantial Clinical Benefit Following Lumbar Spine Arthrodesis by Steven D. Glassman, Anne G. Copay, Sigurd H. Berven, David W. Polly, Brian R. Subach, and Leah Y. Carreon J Bone Joint Surg Am Volume 90(9):1839-1847 September 1, 2008 ©2008 by The Journal of Bone and Joint Surgery, Inc.

2. Receiver operating characteristic curve demonstrating good discrimination (area under the curve, 0.846) for a 6.2-point net change in the physical component summary score based on the Short Form-36 health transition item. Steven D. Glassman et al. J Bone Joint Surg Am 2008;90:1839-1847 ©2008 by The Journal of Bone and Joint Surgery, Inc.

3. Receiver operating characteristic curve demonstrating excellent discrimination (area under the curve, 0.948) for a 31.7-point one-year postoperative Oswestry Disability Index score based on the combined satisfaction survey. Steven D. Glassman et al. J Bone Joint Surg Am 2008;90:1839-1847 ©2008 by The Journal of Bone and Joint Surgery, Inc.

4. Receiver operating characteristic curve demonstrating fair discrimination (area under the curve, 0.761) for a 38.8% change in the numeric leg pain score based on the Short Form-36 health transition item. Steven D. Glassman et al. J Bone Joint Surg Am 2008;90:1839-1847 ©2008 by The Journal of Bone and Joint Surgery, Inc.