title: Measuring real case mix change under Medicare's prospective payment system.
authors: Brandeis University, Waltham, MA 02254.
authors: S H
authors: SH
authors: Altman
mesh_terms: D003953:Diagnosis-Related Groups / Q000706:statistics & numerical data*; D006278:Medicare / Q000706:statistics & numerical data*; D011444:Prospective Payment Assessment Commission; D011445:Prospective Payment System; D013223:Statistics as Topic; D014481:United States