International Research Team Links Nurse Staffing to Patient Satisfaction! 

www.nursing.upenn.edu/live/news/996-nurse-staffing-levels-linked-to-patient#

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Improving the Lives of Fragile Newborns: What Does Nursing Have to Offer?
ldi.upenn.edu/brief/improving-lives-fragile-newborns-what-does-nursing-have-offer

The high cost of unsafe staffing:​
"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."
http://jamanetwork.com/journals/jama/fullarticle/195438

"1/3 of NICUs under staffed...
Infants In NICUs With Poor Work Environment Have Worse Outcomes"     ​

Safe Staffing Is  Cost Effective:

"Conclusions: As a patient safety intervention, patient-to-nurse ratios of 4:1 are reasonably cost-effective and in the range of other commonly accepted interventions."
http://journals.lww.com/lww-medicalcare/Abstract/2005/08000/Improving_Nurse_to_Patient_Staffing_Ratios_as_a.6.aspx