Fig. 3From: Low-dose dexmedetomidine as a perineural adjuvant for postoperative analgesia: a randomized controlled trialPostoperative pain scores in patients receiving control ( ) or dexmedetomidine ( ). Boxes indicate median with 25th and 75th percentiles (interquartile range) and whisker caps indicate minimum to maximum values. *P < 0.05, **P < 0.01. VAS, visual analog scaleBack to article page