Document Classification

Section Type: RESULTS

Text: Patients in the low concentration group consumed significantly less morphine during the period of infusion (POD 1, high concentration group, 56 mg [95 % CI, 42-70 mg] ; low concentration group, 35 mg [95 % CI, 27-43 mg] ; placebo infusion group, 48 mg [95 % CI, 38-59 mg], p = 0. 02 ; POD 2, high concentration group, 50 mg [95 % CI, 41-60 mg] ; low concentration group, 33 mg [95 % CI, 24-42 mg] ; placebo infusion group, 39 mg [95 % CI, 30-48 mg], p = 0. 04) ; however, there were no important differences in pain scores or opioid-related side effects with the numbers available.