Compared with brief advice and BMI , BMI + B showed significant reductions in the number of standard drinks consumed per week at 3 ( adjusted means : -1.22 , 95 % confidence interval [ CI ] : -0.99 , approximately -1.49 , P = 0.01 ) and 6 months ( adjusted means : -1.42 , 95 % CI : -1.14 , approximately -1.76 , P = 0.02 ) , percent days of heavy drinking at 6 months ( adjusted means : -5.90 , 95 % CI : -11.40 , approximately -0.40 , P = 0.04 ) , maximum number of standard drinks consumed in 1 day at 3 ( adjusted means : -1.38 , 95 % CI : -1.18 , approximately -1.62 , P = 0.003 ) and 12 months ( adjusted means : -1.71 , 95 % CI : -1.47 , approximately -1.99 , P = 0.02 ) , and number of standard drinks consumed per drinking day at 3 ( adjusted means : -1.49 , 95 % CI : -1.35 , approximately -1.65 , P = 0.002 ) and 6 months ( adjusted means : -1.28 , 95 % CI : -1.17 , approximately -1.40 , P = 0.01 ) .