. 2013 Mar 14;40(2):133–138. doi: 10.1159/000349985

Table 1.

Frequency distribution and central tendency for variables in the samples of subjects aged 18–45 years by nationality and survey year, N = 8,746^a

	Germany^b 1994		Switzerland^c 1997		Germany^b 2009		Switzerland^c 2010
	(n = 965)		(n = 6,560)		(n = 484)		(n = 737)
	mean	SD	mean	SD	mean	SD	mean	SD
Age, years	33.2	7.0	32.5	7.2	33.7	7.6	33.6	7.4
	n		n		n	%	n	%
Donor status^b
Donor	315	32.6	2,853	43.5	198	40.9	296	40.2
Non-donor	650	67.4	3,707	56.5	286	59.1	441	59.8
Gender
Male	477	49.4	3,071	46.8	215	44.4	415	56.3
Female	488	50.6	3,489	53.2	269	55.6	322	43.7
Education
Low educated	129	13.3	978	14.9	46	9.5	46	6.2
Medium educated	625	64.8	4,332	66.0	321	66.3	577	78.3
High educated	211	21.9	1,250	19.1	117	24.2	114	15.5

Figures refer to number of subjects and percentage or arithmetic mean and standard deviation (SD) within nationality.

Data source: Eurobarometer 1994 and 2009.

Data source: Swiss Health Survey 1997 and Swiss Blood Donation Survey 2010.