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. 2016 Mar 31;18:73. doi: 10.1186/s13075-016-0972-7

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© Karabis et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — CFB in VAS pain 2-week data versus CFB in VAS pain 6-week data. A scatterplot of observed CFB data from RCT arms is displayed along with predicted regression lines, N-weighted (red line) and precision-weighted (blue line). AIC Akaike information criterion; CFB change from baseline, RCT randomised controlled trial, VAS visual analogue scale