Participants in the intervention condition reported significantly more quit attempts ( F [ 1 , 202.5 ] = 15.23 , p = .0001 ) , lower daily cigarette consumption ( F [ 4 , 586 ] = 6.5 , p < .001 ) , and lower levels of nicotine dependence ( F [ 3 , 406 ] = 8.5 , p < .0001 ) compared with controls at all follow-up assessments .