The Impact of Educational Intervention Based on Extended Health Belief Model With Social Support on Promoting Self-care Behaviors in Patients With Smear Positive Pulmonary TB

Tuberculosis is an infectious disease caused by Mycobacterium tuberculosis. It is the tenth leading cause of death in the world. Despite the implementation of an effective prevention and treatment plan, the expected success in reducing and controlling TB cases has not yet been achieved. The aim of this study was to determine the effect of education based on health belief model developed with social support on the promotion of self-care behaviors of patients with smear-positive pulmonary tuberculosis in Qom province in 2019.

80 patients with smear-positive pulmonary tuberculosis Patient being treated at Qom Health Center were included in this educational intervention study. Patients were randomly divided into experimental (n= 40) and control (n= 40) groups. The educational intervention was performed in three sessions of 45 minutes. Data were collected using a questionnaire and during a direct interview before the educational intervention and three months after the educational intervention. Data analysis using SPSS software version 20 and descriptive tests (frequency and percentage, mean and standard deviation) and analytical tests (paired t-test, independent t-test and Chi-square) at the significance level of 0.05 done.

Before educational intervention, there was no significant difference in the mean scores of self-care behavior, perceived sensitivity, perceived barriers, perceived benefits, perceived self-efficacy and perceived social support between the experimental and control groups (P>0.05 ). However, after the educational intervention, a significant difference was observed between the experimental and control groups in terms of the mean scores of self-care behavior, perceived barriers, perceived benefits, perceived self-efficacy and perceived social support (P<0.05).

The results of this study showed that education Based on Extended Health Belief Model can be effective on perceived barriers, perceived benefits, perceived self-efficacy, perceived social support, and self-care by increasing and improving the status of structures. Therefore, by designing educational programs based on this model, it is possible to provide the ground for behavior change in target patients.