When the analysis was adjusted for attendance , we did not find a significant difference between the 3 arms , with incidence rate ratios of 1.14 ( 95 % CI : 0.99 , 1.31 ) and 1.13 ( 95 % CI : 0.98 , 1.30 ) for the CSB + + and RUSF arms , respectively , compared with the CCC arm .