Numbers of NSAIDs used during the two final weeks of the study significantly decreased compared with baseline in group A ( P = 0.001 ; mean : 2.6 , 95 % CI : 1.3 , 3.9 ) ; while in group B this was not shown ( P = 0.9 ; mean : 0.05 , 95 % CI : -0.87 , 0.97 ) .