Fig. 6. Begg's funnel plot for publication bias in the selection of studies. The horizontal axis represents the log risk ratio (RR) and the vertical axis.

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Fig. 6. Begg's funnel plot for publication bias in the selection of studies. The horizontal axis represents the log risk ratio (RR) and the vertical axis indicates the standard error (SE) of the log RR. The vertical line and the sloping lines represent the effects summary RR and the expected 95% confidence interval for a given SE. Each circle represents the eight studies. The symmetrical appearance of the funnel means that there is no publication bias in the selection of the studies included in this metaanalysis. MD: mean difference. Fig. 6. Begg's funnel plot for publication bias in the selection of studies. The horizontal axis represents the log risk ratio (RR) and the vertical axis indicates the standard error (SE) of the log RR. The vertical line and the sloping lines represent the effects summary RR and the expected 95% confidence interval for a given SE. Each circle represents the eight studies. The symmetrical… Clin Orthop Surg. 2018 Mar;10(1):64-73. https://doi.org/10.4055/cios.2018.10.1.64