title: Overfitting.
authors.affiliation: BJS Statistical Editors.
authors.forename: J A
authors.initials: JA
authors.lastname: Cook
authors.affiliation: BJS Statistical Editors.
authors.forename: J
authors.initials: J
authors.lastname: Ranstam
mesh_terms: D015179:Colorectal Neoplasms / Q000601:surgery*; D003107:Colorectal Surgery / Q000706:statistics & numerical data*; D006801:Humans; D015994:Incidence; D015233:Models, Statistical; D011183:Postoperative Complications / Q000453:epidemiology*; D011379:Prognosis; D018570:Risk Assessment / Q000706:statistics & numerical data*