Effect of Educational Intervention Based on the Theory of Planned Behavior (TPB) on the Intention to Inject the Third Dose of the COVID-۱۹ Vaccine in Adults

Background: With the development of COVID-۱۹ vaccines, experts predicted that COVID-۱۹ will soon be eradicated. However, despite the availability of several types of COVID-۱۹ vaccines, some people refused to receive any. The present study aimed to investigate the effect of an educational intervention based on the theory of planned behavior (TPB) on the intention to receive the third dose of the COVID-۱۹ vaccine among Iranian people aged ۱۸ or older with a history of not receiving the third dose of this vaccine. Materials and Methods: This quasi-experimental study was conducted without a control group on ۱۰۰ people aged ۱۸ years or older who had not received the third dose of the COVID-۱۹ vaccine in Bushehr, Iran, in ۲۰۲۲‎. The subjects were selected using the SIB system and available sampling method. The educational intervention included eight training sessions based on the TPB constructs using group discussion and question and answer method along with an educational booklet. Before and two months after the educational intervention, the participants completed a researcher-made questionnaire based on the TPB constructs. The data were analyzed using SPSS software (version ۱۶.۰). Results: A total of ۱۰۰ people aged ۱۸ years or older with a mean age of ۳۶+۱۱.۴۰۰ participated in this study. The results of paired t-tests showed that the mean scores of constructs of the TPB (attitude, subjective norms, perceived behavioral control, and behavioral intention) of the participants increased after the educational intervention (P<۰.۰۵). Conclusion: The educational program designed based on the TPB is useful to change attitudes, subjective norms, perceived behavioral control, and behavioral intention of individuals to receive the third dose of the COVID-۱۹ vaccine.

کلیدواژه ها:

Adults ، COVID-۱۹ ، Education ، Iran ، Theory of Planned Behavior ، Vaccine