question: Compared to corresponding volume of normal saline  what was the result of magnesium 50 mg in normal saline 1 mL or dexamethasone 0.1 mg/kg in normal saline 1 mL on The emergence behaviour score?
context:  postoperative analgesia persisted for a longer duration in groups RM and RD, 8 (5-11) h and 12 (8-16) h, respectively compared with 4 (3-5) h in group R, with a (P < 0.001) [Table 2]