title: Observational studies and predictive models.
authors.affiliation: Department of Community and Family Medicine, Duke University Medical Center, Durham, NC 27710.
authors.forename: L R
authors.initials: LR
authors.lastname: Smith
mesh_terms: D000368:Aged; D006331:Heart Diseases / Q000401:mortality; D006801:Humans; D008962:Models, Theoretical; D011379:Prognosis; D011446:Prospective Studies; D012044:Regression Analysis; D013223:Statistics as Topic; D013514:Surgical Procedures, Operative / Q000009:adverse effects*