Jahanshah Mohammadzadeh - Associate Professor of Psychology, Ilam University, Ilam, Iran
Shahram Mami - Assistant Professor of Psychology, Department of Psychology, Faculty of Human Sciences, Islamic Azad University, Ilam Branch, Ilam, Iran
Khadijeh Omidi - Department of Psychology, Faculty of Psychology and Educational Sciences, Islamic Azad University, Ilam Branch, Ilam, Iran

Background and aims: Depression is the most common psychiatric disorder, and students are morepredisposed to depression than other populations. This meta-analysis was conducted to estimate themean depression score in Iranian students based on DASS-۲۱.Methods: The search was carried out using keywords Depression, Student, DASS-۲۱ and Iran indomestic databases, including SID, Medlib, IranMedex, Irandoc, and Magiran. Data were analyzedusing a meta-analysis (random effects model). The heterogeneity of studies was studied using theI۲ index. Data were analyzed using the Stata software version ۱۱. DASS-۲۱ had been used in allreviewed studies.Results: The sample size was ۳۲۲۹ people included in ۱۷ studies. The mean depression score inIranian students based on DASS-۲۱ was ۹.۳۰ (۹۵% CI: ۱۲.۵۷-۶.۰۳), ۸.۹۰ in female students (۹۵% CI:۴.۵۰-۱۳.۲۹) and ۸.۴۵ in male students (۹۵% CI: ۴.۰۳-۱۲.۸۶). The mean scores of anxiety and stress instudents were ۸.۵۸ (۹۵% CI: ۵.۹۵-۱۲.۸۶) and ۹.۹۱ (۹۵% CI: ۱۱.۲۸-۸.۵۴), respectively.Conclusion: The mean depression score is higher in female students than in male students, and themean score of stress is slightly higher than those of anxiety and depression.

Depression, Anxiety, Stress, Student university, DASS-۲۱, Iran