New Study Adds to Evidence on Success of California’s RN-Patient Staffing Law to Improve Nursing, Patient Care. Study Bolsters Case for Pending Legislation to Set Safe Patient Limits in Massachusetts Acute Care Hospitals. Massachusetts Nurses Association, July 14, 2011 Canton - Another major study has reinforced a growing body of evidence that California’s landmark law requiring minimum, specific nurse-to-patient staffing limits enhances registered nurse staffing and the quality of patient care. The study is the latest piece of scientific research to bolster the case for increasing RN staffing in hospitals and for limiting the number of patients assigned to a nurse at one time. ... Health