Kowsar Int J High Risk Behav Addict 2251-872X 7 2 2018 1 9 10.5812/ijhrba.58579 Mitra Salehi Khah Mahshad Khodaveisi Masoud Khodaveisi Saeed Bashirian Manoochehr Karami Masoud Khodaveisi Research Article 2017 11 12 2016 8 20 2018 1 9 2018 06 30 Background : Prevalence of hepatitis B has been significantly increased among injecting drug users (IDUs) in the recent years. Objectives: : The purpose of the present study was to investigate the effect of health belief model (HBM)-based training on the preventive behaviors of hepatitis B in addicts. Patients and Methods : In this quasi-experimental study, 84 eligible substance users were selected and randomly assigned to experimental and control groups. Data were gathered using 3 questionnaires: demographics, HBM’s components, and the preventive behavior of hepatitis B. A HBM-based intervention was conducted on the experimental group. The data were analyzed by paired and independent t-tests, analysis of covariance (ANCOVA), and Chi-square test using the SPSS/16 software. Results : A significant difference was observed between the means of all HBM’s components and preventive behaviors of hepatitis B of the 2 groups except perceived severity after the intervention (P < 0.05). In the experimental group, the mean difference of the scores before and after the intervention for each of the HBM’s components and the preventive behavior was significant (P < 0.05). Conclusions : Training based on HBM could have effects on the preventive behaviors of hepatitis “B”. Training based on HMB is recommended as a low-cost and effective method. http://jhrba.com/en/articles/58579.html https://cdn.neoscriber.org/cdn/dl/6cce8116-7f5f-11e8-ace8-07d883b543c7