Episode 17 of CRAMSURG - Clinical Reasearch Appraisal and Methodology for Surgical Trainees. The paper for discussion is A Multicenter Randomized Controlled Trial Comparing Safety, Efficacy, and Cost-effectiveness of the Surgisis Anal Fistula Plug Versus Surgeon's Preference for Transsphincteric Fistula-in-Ano (The FIAT Trial), Annals of Surgery Mar 2021 The teaching topic is RCTs - superiority vs non inferiority vs equivalence trials. Brought to you by CRAMSURG www.cramsurg.org.