Relative to controls , participants receiving intervention drank less often [ RR = 0.89 ; 95 % confidence interval ( CI ) : 0.82-0 .97 ] , less per drinking occasion ( RR = 0.92 ; 95 % CI : 0.84-1 .00 ) , less overall ( RR = 0.78 ; 95 % CI : 0.69-0 .89 ) and had fewer academic problems ( RR = 0.81 ; 95 % CI : 0.69-0 .95 ) .
