title: Why do hospital death rates vary?
authors.forename: E A
authors.initials: EA
authors.lastname: Halm
authors.forename: M R
authors.initials: MR
authors.lastname: Chassin
mesh_terms: D006693:Holidays; D017052:Hospital Mortality; D006801:Humans; D010343:Patient Admission; D010561:Personnel Staffing and Scheduling; D011787:Quality of Health Care