the effect of matrix method on anxiety and attitude toward methamphetamine and crack abuse in males referring to addiction treatment centers in tonkabon, iran

results the single covariance analysis of ancova indicated that the value of eta about 72% of variance of anxiety variable and about 76% of variance of drug abuse variable are taken in to account for variable of group. the intervention was effective in reducing anxiety and attitude to crack in males. evaluating the adjusted mean showed the effectiveness of matrix method on anxiety and attitude to crack abuse in males. background drug abuse is a major problem in the communities and has many harmful effects on human body. objectives the current study aimed to compare the efficacy of matrix method on anxiety and attitude of male crack abusers referred to addiction treatment centers in tonkabon, iran, in 2014. patients and methods the current semi -experimental study included 1,000 males referred to addiction treatment centers in tonkabon with crack abuse history in 2014. based on morgan sample volume formula, 278 males with anxiety and higher attitude to drug abuse were randomly selected from 1,000 males referred to addiction treatment centers in tonkabon. then, 30 subjects were reselected out of them and equally assigned into two groups of experimental and control, 15 subjects in each group. the experimental group received 24 sessions of 30 - 60 minutes matrix treatment method in group, but the control group received no training. at the end of training period the post-test was carried out. the research findings confirmed the efficacy of matrix method on anxiety and attitude to crack abuse among those referring to the addition treatment center. conclusions the research result showed that matrix method affected the reduction of methamphetamine and attitude to crack abuse in males referred to the addition treatment center.