Fig. 3

a Forest plot of AUC postoperative pain scores (static) between 0 and 24 h. The SMD estimates for each study are represented by squares, and the lines passing through them represent 95% CI. The diamond represents the overall pooled estimate. b Postoperative pain scores (static) at 24 h (forest plot of sensitivity analysis). SMD standard mean difference, CI confidence interval, IV inverse variance, SD standard deviation, ESPB erector spinae plane block, SAPB serratus anterior plane block