Table 1.

Demographics of the two samples, and a comparison of demographic data of study samples A and B with the general population of the Netherlands aged 16 years and older

Variable	Study A (n = 1082)		Outcome chi-square tests study sample A vs. Dutch population	Study B (n = 292)		Outcome chi-square tests study sample A vs. Dutch population	% in Dutch population
	n	%		n	%
Gender			(1) = 1.45, p = 0.23			(1) = 3.38, p = 0.07
Women	522	48.2		169	58.3		50.8
Men	560	51.8		121	41.7		49.2
Age			(4) = 2.49, p = 0.65			(4) = 13.3, p = 0.01
16–29	219	20.2		86	29.5		18.2
30–39	197	18.2		40	13.7		17.9
40–49	194	17.9		40	13.7		20.1
50–59	180	16.6		52	17.8		16.8
≥ 60	292	27.1		74	25.3		27.0
Marital statusa			(2) = 0.05, p = 0.98			(2) = 2.29, p = 0.32
Single	217	20.1		72	24.8		20.1
Cohabiting/married without Children	509	47.1		120	41.4		46.6
Cohabiting/married (with children)	356	32.9		98	33.8		33.3
Education levela			(2) = 0.55, p = 0.76			(2) = 24.8, p < 0.001
Low	393	36.3		69	23.7		37.4
Middle	410	37.9		96	33.0		38.1
High	279	25.8		126	43.3		24.5
Employment status			(2) = 0.94, p = 0.62			(2) = 5.38, p = 0.07
Full-time	383	35.4		96	32.9		34.7
Part-time	212	19.6		86	29.5		21.3
Unemployed	487	45.0		110	37.7		44.0

^adata of two participants are missing, all analyses were performed using the Chi²-test