Table 2.

Predictors together with domains and indicators used in this study

Predictor variables	Domains (spheresa)	Indicators
1. Age	Child level, individual	Chronological age in years
2. Gender	Child level, individual	Frequencies of boys and girls
3. Life satisfaction before the pandemic	Intrapersonal	Satisfaction rating for general life and school
4. School performance before the pandemic	Intrapersonal	Quality rating of school achievement and perceived difficulty of schoolwork
5. Fear of becoming ill during the pandemic	Intrapersonal	Frequency rating of fear of becoming ill of self or someone that the adolescent knows well
6. Satisfaction with freedom during the pandemic	Intrapersonal	Satisfaction rating for the freedom children have
7. Difficulty and quantity of schoolwork during the pandemic	Intrapersonal	Frequency of finding schoolwork too difficult and/or too much
8. Content of schoolwork during the pandemic	Intrapersonal	Frequency of finding schoolwork interesting and/or useful
9. Leisure time before the pandemic	Social activities before the pandemic (activities)	Frequency of attending a leisure facility and meeting friends outside school
10. Internet use before the pandemic	Digital activities before the pandemic (activities)	Duration of internet use on an average day
11. Screen time during the pandemic	Free time activities during the pandemic (activities)	Frequency of watching TV and/or playing videogames
12. Physical activities during the pandemic	Free time activities during the pandemic (activities)	Frequency of doing sports and/or outdoor activities
13. Passive activities during the pandemic	Free time activities during the pandemic (activities)	Frequency of listing to music and/or doing nothing
14. Parental occupation	Socioeconomic status (resources)	Highest International Socio-Economic Index of occupational status of either caretaker
15. Wealth possessions	Socioeconomic status (resources)	Number of TVs, cars, and/or tablets at home
16. Cultural possessions	Socioeconomic status (resources)	Number of books and/or musical instruments at home
17. Satisfaction with the way adults listen during the pandemic	Relationship with adults during the pandemic (relationships)	Satisfaction rating for the way adults generally listen to adolescents
18. Contact with teachers during the pandemic	Relationship with teachers/school (relationships)	Frequency of contact (including online) with teachers
19. Lengths of not attending school due to the pandemic	School policies (policies)	Number of weeks adolescents have not attended school owning to the pandemic
20. Illness due to the pandemic	Home health situation in relation to the pandemic (context)	Illness of self or household member due to the pandemic

^aBased on the multilevel approach to well-being developed by United Nations Children's Fund [26].