Episode 59 of CRAMSURG - Clinical Research Appraisal and Methodology for Surgical Trainees. The paper for discussion is Intrathecal Morphine for Enhanced Recovery After Laparoscopic Colorectal Surgery: A Randomized Clinical Trial, JAMAsurg Dec 2025. The teaching topic is a practical guide to statistical tests - part 11: recap of parametric tests and correlation. Brought to you by CRAMSURG www.cramsurg.org.