1. The ACTA PORT-score for predicting perioperative risk of blood transfusion for adult cardiac surgery 
A.A. Klein, T. Collier, J. Yeates, L.F. Miles, S.N. Fletcher, C. Evans, T. Richards 
British Journal of Anaesthesia 
Volume 119, Issue 3, Pages (September 2017)
DOI: /bja/aex205
Copyright © 2017 The Author(s) Terms and Conditions

2. Fig 1
Distribution of risk scores in the patient population. The distribution follows a relatively normal curve. Superimposed is a line showing the increasing risk of transfusion associated with higher scores.
British Journal of Anaesthesia  , DOI: ( /bja/aex205)
Copyright © 2017 The Author(s) Terms and Conditions

3. Fig 2
Observed vs predicted transfusion rates in the derivation dataset. There is a close correlation between predicted and observed rates of transfusion across the range of scores in the derivation dataset.
British Journal of Anaesthesia  , DOI: ( /bja/aex205)
Copyright © 2017 The Author(s) Terms and Conditions