The differences of the numbers of cases who received additional anesthetic in the operation had no statistical significance among the three groups ( all P > 0.05 ) , but compared with the sham electroacupuncture group and blank group , the total dose of painkillers in the first 24 h after operation was reduced in the electroacupuncture group [ ( 2.43 + / - 1.08 ) tablets vs ( 3.23 + / - 1.33 ) tablets , ( 3.10 + / - 1.22 ) tablets ] , and the score of most severity pain was also decreased ( 6.65 + / - 1.00 vs 7.48 + / - 0.96 , 7.25 + / - 1.19 ) , besides , the sleeping time in the night of surgery was increased [ ( 220.63 + / - 85.50 ) min vs ( 162.00 + / - 92.69 ) min , ( 151.50 + / - 80.01 ) min , all P < 0.05 ] .