For both morphine and ibuprofen , we found a reduction in pain scores ( mean pre-post difference standard deviation for dose 1 : morphine 1.5 1.2 , ibuprofen 1.3 1.0 , between-group difference [ ] 0.2 [ 95 % confidence interval ( CI ) -0.2 to 0.6 ] ; dose 2 : morphine 1.3 1.3 , ibuprofen 1.3 0.9 , 0 [ 95 % CI -0.4 to 0.4 ] ; dose 3 : morphine 1.3 1.4 , ibuprofen 1.4 1.1 , -0.1 [ 95 % CI -0.7 to 0.4 ] ; and dose 4 : morphine 1.5 1.4 , ibuprofen 1.1 1.2 , 0.4 [ 95 % CI -0.2 to 1.1 ] ) .