title: Why perform a priori sample size calculation?
authors.affiliation: Department of Surgery, McMaster University, 39 Charlton Ave. E., Room 107, Hamilton, ON L8N 1Y1, Canada. farrokh@mcmaster.ca
authors.forename: Forough
authors.initials: F
authors.lastname: Farrokhyar
authors.forename: Deven
authors.initials: D
authors.lastname: Reddy
authors.forename: Rudolf W
authors.initials: RW
authors.lastname: Poolman
authors.forename: Mohit
authors.initials: M
authors.lastname: Bhandari
mesh_terms: D006801:Humans; D016032:Randomized Controlled Trials as Topic; D015203:Reproducibility of Results; D018401:Sample Size; D013514:Surgical Procedures, Operative