title: Ratios cost-effective lifesavers.
mesh_terms: D003362:Cost-Benefit Analysis; D006801:Humans; D008008:Licensure, Nursing / Q000191:economics / Q000331:legislation & jurisprudence; D008404:Massachusetts; D009741:Nursing Staff, Hospital / Q000191:economics* / Q000331:legislation & jurisprudence* / Q000458:organization & administration; D010561:Personnel Staffing and Scheduling / Q000191:economics* / Q000331:legislation & jurisprudence* / Q000458:organization & administration; D011787:Quality of Health Care / Q000191:economics / Q000331:legislation & jurisprudence