Table 1.

Characteristics of the sample by country

Variables		Percent		Chi-square test p value
		Chinese (N = 1853)	German (N = 3306)
Gender	Male	52.1	47.3	0.001
	Female	47.9	52.7
Having a partner	Yes	31.4	56.0	<0.001
	No	68.6	44.0
Father’s education	High	45.8	52.8	<0.001
	Low	54.2	47.2
Subjective general health	Good	89.2	87.0	0.025
	Poor	10.8	13.0
Income sufficiency	Sufficient	81.2	58.5	<0.001
	Insufficient	18.8	41.5
Nutrition importance	Important	89.3	91.8	0.003
	Unimportant	10.7	8.2
Grade importance	Important	92.8	96.2	<0.001
	Unimportant	7.2	3.8
Physical activity	≥3 times a week	22.7	41.3	<0.001
	1–2 times a week	48.8	36.2
	Less than once a week	28.5	22.5
Perceived life quality	Good	39.0	57.8	<0.001
	Poor	61.0	42.2
Alcohol consumption	Never	50.4	9.8	<0.001
	Less than once a week	40.6	30.4
	At least once a week	9.0	59.8
		Median (quartile deviation)		Mann-Whitney U test p value
Age		21.0 (1.5)	23.0 (2.0)	<0.001
BMI		20.1 (1.6)	22.3 (1.9)	<0.001