Background: Patient self-efficacy is one of the most important factors in treating and overcoming
disease. Objective: The aim of this study was to evaluate the effect of an educational program
based on the health belief model on self-efficacy among patients with type 2 diabetes referred to
the Iranian Diabetes Association in 2014. Method: A randomized controlled clinical trial was conducted.
Eighty patients with type 2 diabetes were selected randomly by the double block sample
method. They were then divided into two groups of intervention and control (40 patients in each
group) by random allocation. Data were collected by a questionnaire based on the Health Belief
Model and self-efficacy. The data were gathered two months after the educational program was
held. The educational program was designed on the basis of data collected in the pre-test phase.
Then, the educational program was executed for the intervention group in 8 sessions (each 30
minutes) using lectures and an educational booklet. Data analysis was done with Chi-square Test,
Pearson’s correlation, Independent samples T-test and paired T-test. The significance level was