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  Vol. 288 No. 16, October 23, 2002 TABLE OF CONTENTS
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Hospital Nurse Staffing and Patient Mortality, Nurse Burnout, and Job Dissatisfaction

Linda H. Aiken, PhD,RN; Sean P. Clarke, PhD,RN; Douglas M. Sloane, PhD; Julie Sochalski, PhD,RN; Jeffrey H. Silber, MD,PhD

JAMA. 2002;288:1987-1993.

Context  The worsening hospital nurse shortage and recent California legislation mandating minimum hospital patient-to-nurse ratios demand an understanding of how nurse staffing levels affect patient outcomes and nurse retention in hospital practice.

Objective  To determine the association between the patient-to-nurse ratio and patient mortality, failure-to-rescue (deaths following complications) among surgical patients, and factors related to nurse retention.

Design, Setting, and Participants  Cross-sectional analyses of linked data from 10 184 staff nurses surveyed, 232 342 general, orthopedic, and vascular surgery patients discharged from the hospital between April 1, 1998, and November 30, 1999, and administrative data from 168 nonfederal adult general hospitals in Pennsylvania.

Main Outcome Measures  Risk-adjusted patient mortality and failure-to-rescue within 30 days of admission, and nurse-reported job dissatisfaction and job-related burnout.

Results  After adjusting for patient and hospital characteristics (size, teaching status, and technology), each additional patient per nurse was associated with a 7% (odds ratio [OR], 1.07; 95% confidence interval [CI], 1.03-1.12) increase in the likelihood of dying within 30 days of admission and a 7% (OR, 1.07; 95% CI, 1.02-1.11) increase in the odds of failure-to-rescue. After adjusting for nurse and hospital characteristics, each additional patient per nurse was associated with a 23% (OR, 1.23; 95% CI, 1.13-1.34) increase in the odds of burnout and a 15% (OR, 1.15; 95% CI, 1.07-1.25) increase in the odds of job dissatisfaction.

Conclusions  In hospitals with high patient-to-nurse ratios, surgical patients experience higher risk-adjusted 30-day mortality and failure-to-rescue rates, and nurses are more likely to experience burnout and job dissatisfaction.


Author Affiliations: Center for Health Outcomes and Policy Research, School of Nursing (Drs Aiken, Clarke, Sloane, and Sochalski), Leonard Davis Institute of Health Economics (Drs Aiken, Clarke, Sochalski, and Silber), Department of Sociology (Dr Aiken), Population Studies Center (Drs Aiken, Sloane, and Sochalski), and Departments of Pediatrics and Anesthesia, School of Medicine (Dr Silber), University of Pennsylvania, Philadelphia; and Center for Outcomes Research, Children's Hospital of Philadelphia, Philadelphia, Pa (Dr Silber).



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