Fig. 9From: Analysis of two minimally invasive procedures for osteoporotic vertebral compression fractures with intravertebral cleft: a systematic review and meta-analysisa, b Funnel plots of long-term VAS and cement leakage. c, d Egger’s publication bias plot and Begg’s funnel plots of long-term VAS. e, f Egger’s publication bias plot and Begg’s funnel plots of cement leakage. MD, mean difference; SE, standard error; RR, risk ratioBack to article page