The incidence of emergence agitation was lower in patients given 0.03 mg/kg of midazolam ( 5 of 30 , 16.7 % ) and patients given 0.05 mg/kg of midazolam ( 5 of 30 , 16.7 % ) compared with that in patients given saline ( 13/of 30 , 43.3 % ; P = 0.036 each ) .