Determinants of COVID-19 preventive health behaviors in Iranian adults based on extended parallel process model.

Performing preventive behaviors by individuals has been recognized as one of the important strategies for the prevention and control of Coronavirus Disease 2019 (COVID-19). This study aimed to assess the determinants of adopting preventive behaviors of COVID-19 in a sample of Iranian adults based on Extended Parallel Process Model (EPPM) variables. In this cross-sectional study, 300 adults from Tehran, Iran were selected using cluster sampling method from five areas of the city: north, south, west, east, and center. The participants completed a study instrument developed to assess demographic information and EPPM variables. Finally, the data were analyzed using SPSS software. The mean age of the participants was 40.11 (± 15.158) years. The results showed that 88.3% (n = 265) of the participants were in the process of danger control. Perceived self-efficacy, attitude, response efficiency, behavioral intention, and the number of hours of activity outside home were determinants of performing COVID-19 preventive behaviors among the participants. These predictors might be used to develop theory-based educational efforts based on EPPM variables due to encouraging people to adopt COVID-19 preventive behaviors. Our results suggest that because many participants were engaged in danger control, health professionals should focus on increasing perceived efficacy.