Fig. 5From: Tubeless versus standard percutaneous nephrolithotomy: an update meta-analysisForest plots and meta-analysis of (a) postoperative hemoglobin drop, (b) postoperative analgesia requirements, (c) postoperative pain scores. WMDÂ =Â weighted mean difference, SMDÂ =Â standardized mean difference, CIÂ =Â confidence interval, PODÂ =Â postoperative dayBack to article page