title: When you don't develop your own: validation methods for patient classification systems.
authors.forename: M A
authors.initials: MA
authors.lastname: Williams
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D009730:Nursing Assessment / Q000379:methods; D009732:Nursing Care; D010361:Patients / Q000145:classification*; D011379:Prognosis; D013997:Time Factors