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Frequency of rescue analgesic drug administered to patients in each group. Group A had significantly lower rescue analgesic drug use in the anesthesia recovery room than group B (P = .01), but at 6 and 12 hours after the surgery, group A was higher than group B (6 h, P = .048; 12 h, P = .02). At other times, however, there was no difference between the 2 groups. ∗ P < .05 significant difference between groups.
