Complete relief of pain was observed in 6 ( 2.3 % ) of 266 women after 24 hours , 21 ( 8.0 % ) of 264 after 72 hours , and 77 ( 29.1 % ) of 265 after 10 days in the MLE group , and in 11 ( 3.9 % ) of 285 , 23 ( 7.7 % ) of 297 , and 78 ( 26.4 % ) of 295 in the LE group , respectively ( P = 0.36 ) .