Limitations
Limitations of this study include a small sample size that reflects ENT transfusion practice at a Head and Neck, tertiary centre when compared to other surgical specialties. Baseline characteristics of patients were not collected and adjusted for, which would reduce confounding factors. Patients with multiple co-morbidities are more likely to need transfusing due to anaemia of chronic disease. The blood transfusion tariffs used in the cost-analysis were from 2015, and therefore did not account for the inflation related adjustments in costs.