Fig. 4
From: Zingiberaceae extracts for pain: a systematic review and meta-analysis
A scatter plot showing the effect size (standardized mean difference (SMD), y-axis) for each study included in the meta-analysis, plotted against the dose of Zingiberaceae extract that was used in that study (x-axis). The results show that studies using larger doses of Zingiberaceae extracts tended to report more effective hypoalgesia (R2 = 0.71). Different markers represent the extract type: Triangle = Javanese ginger; Circle = Ginger; Square = Mixed ginger and galangal; Diamond = Curcuminoids/curcumin