Table 1.

Distribution (number and proportion) of the study samples by background variables

		HIS 2013		FCS 2014
Background variables		N	%	N	%
Region of residency	Flemish Region	2113	32.3	702	57.9
	Brussels Region	1911	29.2	90	7.4
	Walloon Region	2521	38.5	421	34.7
Gender	Males	3188	48.7	596	49.1
	Females	3357	51.3	617	50.9
Education	Low level	3503	52.5	556	45.8
	High level	3042	46.5	657	54.2
Age group	18–34 years	2155	32.9	456	37.6
	35–50 years	2397	36.6	414	34.1
	51–64 years	1993	30.5	343	28.3
Total		6545	100.0	1213	100.0