• Marianne E Weiss, Olga Yakusheva, and Kathleen L Bobay.
• Marquette University College of Nursing, Milwaukee, WI 53201-1881, USA. marianne.weiss@marquette.edu
• Health Serv Res. 2011 Oct 1; 46 (5): 1473-94.

ObjectivesTo determine the impact of unit-level nurse staffing on quality of discharge teaching, patient perception of discharge readiness, and postdischarge readmission and emergency department (ED) visits, and cost-benefit of adjustments to unit nurse staffing.Data SourcesPatient questionnaires, electronic medical records, and administrative data for 1,892 medical-surgical patients from 16 nursing units within four acute care hospitals between January and July 2008.DesignNested panel data with hospital and unit-level fixed effects and patient and unit-level control variables.Data Collection/ExtractionRegistered nurse (RN) staffing was recorded monthly in hours-per-patient-day. Patient questionnaires were completed before discharge. Thirty-day readmission and ED use with reimbursement data were obtained by cross-hospital electronic searches.Principal FindingsHigher RN nonovertime staffing decreased odds of readmission (OR=0.56); higher RN overtime staffing increased odds of ED visit (OR=1.70). RN nonovertime staffing reduced ED visits indirectly, via a sequential path through discharge teaching quality and discharge readiness. Cost analysis projected total savings from 1 SD increase in RN nonovertime staffing and decrease in RN overtime of U.S.$11.64 million and U.S.$544,000 annually for the 16 study units.ConclusionsPostdischarge utilization costs could potentially be reduced by investment in nursing care hours to better prepare patients before hospital discharge.© Health Research and Educational Trust.

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