Table 1
Synthesis of variables and the instruments used
| DIMENSIONS | VARIABLES | INSTRUMENTS |
| Physical activity | Physical activity and sedentary behavior | International Physical Activity Questionnaire – Short Form (IPAQ-SF) |
| Lifestyle | Commuting mode | ESVIAUN questionnaire |
| Adherence to the Mediterranean diet | KIDMED questionnaire | |
| Alcohol consumption | AUDIT Scale – Alcohol Use Disorders Identification Test | |
| Compulsive Internet use | Compulsive Internet Use Scale (CIUS) | |
| Quality of life and mental health | Emotional intelligence | Trait Meta-Mood Scale – Short Version (TMMS-24) |
| Emotional and behavioral difficulties | Strengths and Difficulties Questionnaire (SDQ) (Ortuño-Sierra et al., 2016) | |
| Self-esteem | Rosenberg Self-Esteem Scale | |
| Life satisfaction | Satisfaction With Life Scale (SWLS) | |
| Perceived stress | Perceived Stress Scale (PSS-14) | |
| Suicidal behavior | SENTIA-Brief Scale | |
| Sociodemographic data | Age, gender, nationality, residence, employment status, income, income satisfaction | Ad hoc questionnaire |
| Control questions | Random or inconsistent responses | Oviedo Infrequency Scale (INF-OV) |
