Table 1. Socio-demographic characteristics of study population (N = 943).

	Frequency in study population (unless otherwise specified)
Mean age (years)	18 (sd 2; range 16–25)
Gender
Female	593	(62.9%)
Ethnicity
Non-Dutch	625	(66.3%)
Home situation
Living with parent(s)	745	(79.0%)

Characteristics adjusted from Vogel et al [17].