Table 1.

Sociodemographic and health-related data of the sample

	Adolescents
	N = 950 (100%)
Gender
Female	484 (50.9%)
Male	465 (48.9%)
Diverse	1 (0.1%)
Age (years)
M (SD)	15.0 (1.39)
Md (Min, Max)	15.0 (13.0, 17.0)
Education
None	6 (0.6%)
Not identified*	15 (1.6%)
Special school	36 (3.8%)
Secondary school	73 (7.7%)
Secondary school/middle school	343 (36.1%)
Vocational school	78 (8.2%)
Preparatory high school	399 (42.0%)
Integration assistance**
Yes	125 (13.2%)
No	819 (86.2%)
Missing	6 (0.6%)
Number of chronic health conditions***
One and more	127 (13.4%)
None	823 (86.6%)

^*Due to implausible data, the category “not identified” was added

^**The question on integration assistance was only presented if children and adolescents were attending any kind of educational institution

^***The assessment of chronic conditions is based on parental report and is considered present if at least one of the following health problems is reported: central nervous system disease, alcohol and/or psychotropic substance abuse, active or uncontrolled systemic disease, psychiatric disorders, severe sensory deficits, use of psychotropic drugs or other medications, intellectual disability, or other neurobehavioral disorder, pre-, peri-, and postnatal problems, and/or other. M mean, SD standard deviation, Md median, Min minimum, Max maximum, N sample size