Evaluation of the proportional hazards assumption and covariate adjustment methods in comparative surgical observational studies with time-to-event endpoints.
Rui-Ming LiangZe-Bin ChenQian ZhouPublished in: European journal of surgical oncology : the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology (2024)
This study highlights suboptimal reporting of PH assumption evaluation in observational surgical studies both before and after PSA. Efforts and consensus are needed with respect to the underlying assumptions of statistical methods.