Table 1.
Variable name | Description |
---|---|
country | Country of data collection. |
waves | Participation in waves. |
anonID | Anonymized individual participant's ID code. |
startdate | Starting time of data collection. |
month_collection | Month of data collection in each wave. |
school | Anonymized ID code of participating school. |
class | Anonymized ID code of participating class. |
school_SES | Socio-economic status of school (varied across countries; not possible to define for Estonia and Finland). |
version | Version of the questionnaire. |