Completion, publication, and outcome reporting of registered randomized trials in abdominal surgery: registry-based cohort study

Background

Abdominal surgery poses unique challenges to the conduct of randomized clinical trials (RCTs). However, trial discontinuation, non-publication, and selective reporting may result in an incomplete picture of the available evidence base. This study assessed the trajectories of RCTs in abdominal surgery from trial registration to the publication and reporting of results.