The difference in the percentage changes of the JKOM score between the two intervention arms ( IA-HA ; -34.7 % ( P < 0.001 ) , NSAID ; -32.2 % ( P < 0.001 ) ) was -2.5 % ( 95 % confidence interval ( CI ) : -14.0 to 9.1 ) , indicating IA-HA was not inferior to NSAID .