Cost-effectiveness of eliminating hospital understaffing by nursing staff: a retrospective longitudinal study and economic evaluation (29 April 2025)

Summary

Understaffing by nursing staff in hospitals is linked to patients coming to harm and dying unnecessarily. There is a vicious cycle whereby poor work conditions, including understaffing, can lead to nursing vacancies, which in turn leads to further understaffing. Is hospital investment in nursing staff, to eliminate understaffing on wards, cost-effective?

Content

This longitudinal observational study analysed data on 185 adult acute units in four hospital Trusts in England over a 5-year period. 

The study found that exposure to registered nurse understaffing is associated with increased hazard of death, increased chance of readmission and increased length of stay, while exposure to nursing support understaffing is associated with smaller increases in hazard of death and length of stay but reduced readmissions.

Rectifying understaffing on inpatient wards is crucial to reduce length of stay, readmissions and deaths. According to the National Institute for Health and Care Excellence £10 000 per QALY threshold, it is cost-effective to eliminate understaffing by nursing staff. This research points towards investing in registered nurses over nursing support staff and permanent over temporary workers. Targeting particular patient groups would benefit fewer patients and is less cost-effective.