Episode 58 of CRAMSURG - Clinical Research Appraisal and Methodology for Surgical Trainees. The paper for discussion is Neoadjuvant Chemotherapy Versus Chemoradiotherapy for Locally Advanced Rectal Cancer: A Multicenter Propensity Score–Matched Study, Dis Col Rec Dec 2025. The teaching topic is a practical guide to statistical tests - part 10: outliers, non parametric tests and Wilcoxon. Brought to you by CRAMSURG www.cramsurg.org.