Background: Low adherence to the treatment regimen in tuberculosis patients has been recognized as a major threat for tuberculosis (TB) control program. Thus, the present study was conducted to assess the factors affecting adherence to the treatment regimen of TB patients via Health Belief Model (HBM). Methods: In this cross-sectional study,110 tuberculosis patients attending anti-TB center in Zabol were selected and included in the study using census method. Data were collected using Health Belief Model (HBM) questionnaire and reviewing the patients' medical files. The collected data were analyzed by SPSS software using t-test, ANOVA and multiple regression analysis with 95 % confidence level. Results: The mean age of the participants was 55.7±18.6 years. 89% of the patients had pulmonary tuberculosis and 11% had extra-pulmonary tuberculosis. The multiple regression analysis showed knowledge, self-efficacy, perceived benefits and perceived threat were significant predictors of adherence to the treatment regimen. The HBM constructs accounted for 29% of the variance observed in adherence to the treatment regimen. Conclusion: The findings of the study highlight the need to increase awareness and change the patients’ beliefs about the risks of low adherence to the treatment regimen in patients.
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Sarani et al. (2014) studied this question.