AA attendance was associated with improved drinking outcomes in both younger adults ( PDA : F ( 1 , 247 ) = 8.55 , p < 0.01 ; DDD : F ( 1 , 247 ) = 15.93 , p < 0.01 ) and adults aged 30 + ( PDA : F ( 1 , 1311 ) = 86.58 , p < 0.01 ; DDD : F ( 1 , 1311 ) = 11.96 , p < 0.01 ) .