Comparison of the CACE estimate of the mean treatment difference to the intention-to-treat ( ITT ) estimate at 12 months showed a greater benefit of CBI amongst participants compliant with treatment on the Roland Morris Questionnaire ( CACE : 1.6 points , 95 % CI 0.51 to 2.74 ; ITT : 1.3 points , 95 % CI 0.55 to 2.07 ) , the Modified Von Korff disability score ( CACE : 12.1 points , 95 % CI 6.07 to 18.17 ; ITT : 8.6 points , 95 % CI 4.58 to 12.64 ) and the Modified von Korff pain score ( CACE : 10.4 points , 95 % CI 4.64 to 16.10 ; ITT : 7.0 points , 95 % CI 3.26 to 10.74 ) .