Abstract
OBJECTIVE: Traumatic experiences and stressful life events have crippling outcomes on individuals' psychiatric disorders and are also frequently comorbid with addictive behaviors. This study aims to propose a mediation model to examine the association between coronavirus disease-2019 (COVID-19)-related post-traumatic stress disorder (PTSD) and social media addiction (SMA) among university students, and the mediating role of fear of missing out (FoMO). METHODS: A cross-sectional study with 856 university students (mean age 19.2 years; 67.9% female) was conducted in China. The COVID-19-related PTSD scale, the FoMO scale, and the Bergen Social Media Addiction Scale were used, in addition to an online questionnaire addressing participants' sociodemographic information. Descriptive statistics and correlations were conducted with SPSS 21.0. The Structural Equation Model (SEM) with AMOS 21.0 was performed to assess the hypothesized mediation mode. The bootstrap with the 95% confidence interval (CI) was computed to test the significance of the mediating effect. RESULTS: SEM demonstrated that COVID-19-related PTSD symptoms significantly and negatively influenced SMA (β=0.247, p<0.001), FoMO significantly and positively affected university students' SMA (β=0.341, p<0.001), and FoMO partially mediated the association between COVID-19-related PTSD symptoms and SMA. The mediation effect of FoMO was 0.176, with bootstrapping 95% CI=0.123, 0.235. CONCLUSION: The main effects of COVID-19-related PTSD symptoms and FoMO on SMA among university students were identified, providing intervention strategies for mental health professionals on how to reduce the risk of SMA when confronting future traumatic events and public health crises.