Abstract Session: Health Services Research Monday, May 2, 1:30 – 2:45 pm Room: Ballroom CD Co-Moderators: Stefan Holubar, MD, MS, Cleveland, OH Elise Lawson, MD, Madison, WI 1:30 pm Introduction 1:35 pm M12 Stage III Rectal Cancer: It's the Ratio, not the Raw Number J. Bliggenstorfer*1, M. Ginesi1, A.L. Sarode1, E. Steinhagen1, S.L. Stein1; 1Cleveland, OH 1:41 pm Discussion 1:43 pm M13 How Far is Too Far? Cost-Effectiveness Analysis of Regionalized Rectal Cancer Surgery I. Leeds*1, Z. Xu1 2, H. Pantel1 2, A. Mongiu1 2, A. Luria1 2, W. Longo1 2, V. Reddy1 2; 1New Haven, CT, 2Rochester, NY 1:49 pm Discussion 1:51 pm M14 Cost-Effectiveness Analysis: Selective Use of Neoadjuvant Chemoradiation in Locally Advanced Rectal Cancer A.N. Mueller*1, Z.N. Torgersen1, M. Shashidharan1, C.A. Ternent1; 1Omaha, NE 1:57 pm Discussion 1:59 pm M15 Factors Associated with Receipt of Adjuvant Chemotherapy in Stage II Colon Cancer M. Ginesi*1, J. Bliggenstorfer1, D. Mugayo1, S. Xu1, D. Jodeh1, J.E. Selfridge1, S.L. Stein1, E. Steinhagen1; 1Cleveland, OH 2:05 pm Discussion 2:07 pm M16 Predictors of Compliance and Survival with Adjuvant Chemotherapy in Older Adults With Stage III Colon Cancer H. Simon*1, T. Reif de Paula1 2 3, Z. Spigel1 2 3, D. Keller1 2 3; 1Pittsburgh, PA, 2Houston, TX, 3Sacramento, CA 2:13 pm Discussion 2:15 pm M17 Predictors of Clostridium Difficile Infection in Colorectal Surgery: a NSQIP-IBD Study A. Mitchell*1, S. Hill1, S. Choksi1, W. Kim1, D. Chismark1, B. Valerian1, J. Canete1, E. Lee1, .. on behalf of the NSQIP-IBD collaborative1; 1Albany, NY 2:21 pm Discussion 2:23 pm M18 Costs Optimization in Robot-Assisted Ventral Mesh Rectopexy A.A. Marra*1, V. De Simone1, P. Campennì1, A. Parello1, F. Litta1, C. Ratto1; 1Roma, Lazio, Italy 2:29 pm Discussion 2:31 pm M19 Does Concomitant Rectoanal Intussusception Limit Improvements in Clinical Outcome and Quality of Life After Sacral Nerve Stimulation for Fecal Incontinence? A. Dawes*1, J. Mariscal2, P.J. White2, E. Midura2, A. Sirany2, A. Lowry2, C. Jensen2, A. Thorsen2; 1Stanford, CA, 2Minneapolis, MN 2:37 pm Discussion 2:39 pm Question and Answer 2:45 pm Adjourn