The power of prehabilitation, the reporting of power calculations in randomised clinical trials evaluating prehabilitation in cancer surgery; a systematic review and meta-research study.

Objective: To assess sample size calculation reporting in randomised controlled trials (RCTs) investigating prehabilitation interventions in oncological surgery patients.

Data Sources: A systematic literature search was performed in multiple medical databases from inception to April 2023, including MEDLINE, Embase, The Cochrane Library, CINHAL, AMED, and PsychINFO.

Study Selection: The inclusion criteria used were randomised controlled trials evaluating effectiveness of exercise, nutrition, and/or psychological interventions on postoperative outcomes of adult patients undergoing oncological surgery.