1. Patient-initiated mandatory boluses for ambulatory continuous interscalene analgesia: an effective strategy for optimizing analgesia and minimizing side-effects 
M.J. Fredrickson, A Abeysekera, D.J. Price, A.C. Wong 
British Journal of Anaesthesia 
Volume 106, Issue 2, Pages (February 2011)
DOI: /bja/aeq320
Copyright © 2011 The Author(s) Terms and Conditions

2. Fig 1
Patient flow through the study. 1Three patients had no rotator cuff tear on diagnostic arthroscopy. 2Two patients did not have catheters placed successfully. 3One patient had a prolonged catheter disconnect on postoperative day 1.
British Journal of Anaesthesia  , DOI: ( /bja/aeq320)
Copyright © 2011 The Author(s) Terms and Conditions

3. Fig 2
Postoperative pain on days 1 and 2. ‘Worst pain’ and ‘average pain’ refer to the entire previous 24 h. The bars depict medians; boxes depict inter-quartile range, and whiskers are 90th centiles. Bracketed values are 95% confidence intervals of the mean (NB: confidence intervals for skewed data, that is, day 2 average pain and all day 1 scores, should be interpreted with caution). NRPS, numerical rating pain score.
British Journal of Anaesthesia  , DOI: ( /bja/aeq320)
Copyright © 2011 The Author(s) Terms and Conditions