Table 1.

Demographic characteristics of participants (N = 1,804).

Characteristics	Category	Frequency (f)	Percentage (%)
Gender	Male	890	49.3
	Female	914	50.7
Age	15–24 years	194	10.8
	25–34 years	362	20
	35–44 years	277	15.4
	45–54 years	279	15.5
	55–64 years	306	17
	65 years and older	386	21.4
Marital status	Married	973	53.9
	Separated	5	0.3
	Divorced	172	9.5
	Widow or widower	103	5.7
	Never been married	551	30.5
Level of education	Primary school	80	4.4
	Vmbo (intermediate secondary education, US: junior high school)	469	26
	Havo/vwo (higher secondary education/preparatory university education, US: senior high school)	210	11.7
	Mbo (intermediate vocational education, US: junior college)	392	21.7
	Hbo (higher vocational education, US: college)	392	21.7
	Wo (university)	144	8
	Other	72	4
	Not yet completed any education	44	2.4
	Not yet started any education	1	0.1
Type of living arrangement	Self-owned dwelling	1,229	68.2
	Rental dwelling	562	31.1
	Cost-free dwelling	13	0.7