1. Regional anaesthesia to prevent chronic pain after surgery: a Cochrane systematic review and meta-analysis† 
M.H. Andreae, D.A. Andreae 
British Journal of Anaesthesia 
Volume 111, Issue 5, Pages (November 2013)
DOI: /bja/aet213
Copyright © 2013 The Author(s) Terms and Conditions

2. Fig 1
Search diagram. The search diagram gives an overview of the search and selection process.
British Journal of Anaesthesia  , DOI: ( /bja/aet213)
Copyright © 2013 The Author(s) Terms and Conditions

3. Fig 2
Risk of bias graph. The review authors summarize their judgements about each study for each risk of bias category in the methodological summary figure. Detailed justifications are published elsewhere.18
British Journal of Anaesthesia  , DOI: ( /bja/aet213)
Copyright © 2013 The Author(s) Terms and Conditions

4. Fig 3
Forest plot: outcomes at 6 months favoured epidural anaesthesia for the prevention of PPP after thoracotomy with an OR of 0.33 (95% CI 0.20–0.56) and paravertebral block for breast cancer surgery with an OR of 0.37 (95% CI 0.14–0.94), respectively. More forest plots are published elsewhere.18
British Journal of Anaesthesia  , DOI: ( /bja/aet213)
Copyright © 2013 The Author(s) Terms and Conditions