title: The usefulness of diagnostic tests.
authors.affiliation: Department of Radiology, School of Medicine, University of California, Davis, Sacramento 95817.
authors.forename: C J
authors.initials: CJ
authors.lastname: Rosenquist
mesh_terms: D001064:Appendicitis / Q000175:diagnosis* / Q000401:mortality / Q000601:surgery; D006801:Humans; D010043:Outcome and Process Assessment, Health Care; D011336:Probability; D011379:Prognosis; D012680:Sensitivity and Specificity; D014463:Ultrasonography