On the BAI , CSC was superior to CAU [ difference in gain scores from baseline to 3 months : -5.11 , 95 % confidence interval ( CI ) -8.28 to -1.94 ; 6 months : -4.65 , 95 % CI -7.93 to -1.38 ; 9 months : -5.67 , 95 % CI -8.97 to -2.36 ; 12 months : -6.84 , 95 % CI -10.13 to -3.55 ] .