Studies from Europe
| No of reference | Location of Study | No of CYP participants (and subpopulation/group) | Ages of children | Methods and techniques |
| 10 | UK | 15 young people | 11–18 years | Audiorecorded Focus-Group discussion via Zoom video conference |
| 15 | Portugal | 617 adolescents and youth | 16–24 years | Online questionnaire with open-response questions |
| 18 | Netherlands | 34 adolescents | 11–17 years | Ecological momentary assessment with questionnaire of intolerance of uncertainty and Depressive Symptoms applied via Ethica app |
| 20 | Germany | 1586 children and adolescents | 7–17 years | Online survey with sociodemographic variables, COVID-19 19 Burden and Health Related Quality of Life (HRQoL) and mental health |
| 23 | Spain | 228 children | 3–12 years | Free association exercise applied by parents (Guided by two questions: When you hear the word coronavirus, what comes to mind, or what do you think? How are you feeling these days because of the coronavirus?). The parents received an explanatory document which explain the free association exercise and that they would take the role of interviewers. |
| 33 | Poland | 2408 adolescents | 11–18 years | Online Nationwide survey with questions referring to implementation of health promotion in the environment of children and adolescents; and five areas related to the functioning of students in self-isolation |
CYP, children and young people.