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Established in 1989 as one of the first centers to scale up rigorous research on the impact of nursing on patient outcomes, the Center uses evidence to inform policy and produces the next generation of scientists.

Successful Medicare Initiative Increases the Supply of Nurse Practitioners to Address Primary Care Shortages

A new CHOPR study published in Health Affairs shows that Medicare support for clinical training for nurse practitioners (NPs) would increase their numbers and address the national shortage of primary care. The study, by researchers at the Center for Health Outcomes and Policy Research University of Pennsylvania School of Nursing, the Hospital of the University of Pennsylvania, and the Leonard Davis Institute of Health Economics shows that universities participating in the $200 million Graduate Nurse Education (GNE) Demonstration significantly increased the number of primary care NPs they graduated. More

“One in four Americans, or over 80 million people, lack a primary care provider. Nurse practitioners with advanced clinical training in primary care help the public obtain health care when they need it. There are plenty of qualified applicants to university NP programs but admissions are limited because we don’t have enough primary care clinicians to supervise student learners in their practices.” Co-author Linda H Aiken, PhD, RN,

Illinois Nurse Staffing Legislation Predicted to Reduce Hospital Deaths and Improve Care

According to a new study published in the scientific journal BMJ Open, proposed state legislation in Illinois—HB 2604 Safe Staffing Limits Act– would significantly improve nurse staffing in hospitals and likely save thousands of lives. The cost of improving nurse staffing could be offset by cost savings achieved by the impact of better nurse staffing on shorter length of hospital stays. More


Hospitals with More Inpatient Nurse Practitioners Linked to Better Outcomes, More Satisfied Patients

According to a new study published in the prestigious Medical Care, hospitals that employ more inpatient nurse practitioners have lower surgical mortality, higher patient satisfaction, and lower costs of care. Nurse practitioners are registered nurses with advanced graduate education and expanded legal scope of practice to prescribe treatments including pain medications.

“This is the first large study to document the significant added value of hospitals employing nurse practitioners in acute inpatient hospital care as well as having good RN staffing,” said lead author Professor Linda Aiken, PhD, RN of Penn’s Center for Health Outcomes and Policy Research and the Leonard Davis Institute of Health Economics.

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Safe Nurse Staffing Standards in Hospitals Saves Lives and Lowers Costs

A new study published in The Lancet Global Health showed that establishing safe nurse staffing standards in hospitals in Chile could save lives, prevent readmissions, shorten hospital stays, and reduce costs.

July 6, 2021 | The study, by the Center for Health Outcomes and Policy Research (CHOPR) at the University of Pennsylvania School of Nursing, and the Universidad de los Andes - Chile School of Nursing, found very large variations in patient to nurse staffing across 40 hospitals located throughout Chile. Nurse staffing was significantly better in private compared to public hospitals. Differences in nurse staffing across public hospitals were found to be associated with avoidable deaths and higher than necessary costs. More