1. Evaluation of costs and effects of epidural analgesia and patient-controlled intravenous analgesia after major abdominal surgery 
E Bartha, P Carlsson, S Kalman 
British Journal of Anaesthesia 
Volume 96, Issue 1, Pages (January 2006)
DOI: /bja/aei270
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Illustration of the cost-effectiveness ratio (CER) and the incremental cost-effectiveness ratio (ICER).10 The slopes of the lines from origin give the CER for the treatment with EDA and PCIA. The ICER (dotted line) is the slope of the line joining the points EDA and PCIA. CER=Cost/Effect and ICER=(CostEDA−CostPCIA)/(EffectEDA−EffectPCIA).
British Journal of Anaesthesia  , DOI: ( /bja/aei270)
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
The decision tree illustrates the selected clinical pathways and probabilities for treatment with EDA and PCIA. The final branches show the effectiveness of treatment expressed as number of pain-free days with actual probabilities at rest and during activity. Finally the overall probability (product of the probabilities) for the actual branch is given using probabilities only at rest because of the limited space available.
British Journal of Anaesthesia  , DOI: ( /bja/aei270)
Copyright © 2006 British Journal of Anaesthesia Terms and Conditions