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. 2019 May 9;36(Suppl 1):101–127. doi: 10.1007/s40266-019-00657-w

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© The Author(s) 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial 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.

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Fig. 2 — a Risk of bias summary in studies without concomitant pharmacological OA treatment (studies meeting the pre-specified selection criteria): review authors’ judgements about each risk of bias item for each study included in the primary qualitative synthesis. b Risk of bias summary in studies with concomitant pharmacological OA treatment (studies included in the parallel qualitative synthesis): review authors’ judgements about each risk of bias item for each study included in the parallel qualitative synthesis. OA osteoarthritis