1. Prevalence of anaemia before major joint arthroplasty and the potential impact of preoperative investigation and correction on perioperative blood transfusions 
E. Saleh, D.B.L McClelland, A. Hay, D. Semple, T.S. Walsh 
British Journal of Anaesthesia 
Volume 99, Issue 6, Pages (December 2007)
DOI: /bja/aem299
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions

2. Fig 1 Flow diagram showing the derivation of the study data set.
British Journal of Anaesthesia  , DOI: ( /bja/aem299)
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
(a) The proportion of patients in each preoperative haemoglobin band transfused at least 1 unit. A total of 679 red cell units transfused to 1079 patients. (b) The average number of units transfused per patient in each preoperative haemoglobin band.
British Journal of Anaesthesia  , DOI: ( /bja/aem299)
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions

4. Fig 3
Total number of units transfused to patients in each preoperative haemoglobin band. A total of 679 units of RBC transfused for 1079 patients. Number of patients in each band was: 4 (81–90), 16 (91–100), 62 (101–110), 130 (111–120), 274 (121–130), 330 (131–140), 200 (141–150), 67 (151–160), and >160 (14).
British Journal of Anaesthesia  , DOI: ( /bja/aem299)
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions