| ANOVA | Analysis of Variance |
| CASMIN | Comparative Analysis of Social Mobility in Industrial Nations |
| CI | Confidence Interval |
| CLIL | Content and Language Integrated Learning |
| COP-S | Corona and Psyche South Tyrol |
| COVID-19 | Corona Virus Disease 2019 |
| DSM-5 | Diagnostic and Statistical Manual of Mental Disorders 5 |
| FAS III | Family Affluence Scale III |
| GAD | Generalized Anxiety Disorders |
| GPIUS-2 | Generalized Problematic Internet Use Scale 2 |
| HBSC | Health Behavior in School-Aged Children |
| HLSAC | Health Literacy for School-Aged Children |
| ICD-10 | International Classification of Diseases 10 |
| MSPSS | Multidimensional Scale of Perceived Social Support |
| PHQ-2 | Patient Health Questionnaire 2 |
| PIU | Problematic Internet Use |
| SCARED | Screen for Child Anxiety Related Emotional Disorders |
| SD | Standard Deviation |
| SOMEDIS | Social Media Disorder Scale |
| VIF | Variance Inflation Factors |