Background variables
depressive, Depression, Anxiety, anxiety
In order to control for possible group differences and to aid a correct interpretation of the results, we assess a variety of relevant background variables and possible confounders. Characteristics that are assessed with regard to the responding parent and the family include: date of birth, gender, country of birth of the responding parent and his/her parents, educational level, relationship status, living situation (living with/without partner), health, sleep, anxiety and depressive symptoms (Hospital Anxiety and Depression Scale HADS [