Fig. 4From: Ultrasound-guided transmuscular quadratus lumborum block reduced postoperative opioids consumptions in patients after laparoscopic hepatectomy: a three-arm randomized controlled trialThe comparison of visceral NRS pain score of three groups in different time point. a Bolus times in PCIA at postoperative interval; b Total bolus times. Data are shown as median (IQR). Data for Bolus times in PCIA at postoperative interval were analyzed by ANOVA for repeated measures. Data for total bolus times was analyzed by Kruskal-Wallis test for inter-group comparisons and Bonferroni method for pairwise comparison. *pā<ā0.05 compared with Group S;#pā<ā0.05 compared with Group OBack to article page