Table 1.

Characteristics of the study population

	Total sample n (%)	Subsample of reliability study n (%)
Sex
Female	162 (49.7)	47 (53.4)
Male	163 (50.0)	41 (46.6)
Missing values	1 (0.3)	–
Age
20–29 years	24 (7.4)	5 (5.7)
30–39 years	30 (9.2)	9 (10.2)
40–49 years	85 (26.1)	20 (22.7)
50–59 years	87 (26.7)	22 (25.0)
60–69 years	99 (30.4)	32 (36.4)
Missing values	1 (0.3)	–
School educationa
Low	51 (15.9)	18 (20.5)
Middle	118 (36.2)	35 (39.8)
High	151 (46.3)	34 (38.6)
Missing values	6 (1.8)	1 (1.1)
Net equivalent incomeb
≤ 1500 €	82 (25.2)	25 (28.4)
1501–3000 €	153 (46.9)	43 (48.9)
> 3000 €	62 (19.0)	14 (15.9)
Missing values/not specified	29 (8.9)	6 (6.8)
Migration statusc
No migration background	263 (80.7)	78 (88.6)
Migration background	59 (18.1)	9 (10.2)
Missing values/not specified	4 (1.2)	1 (1.1)
Study regions
Hamburg	161 (49.4)	–
Hanover	165 (50.6)	88 (100)

^aGrouping of school graduation according to [3]^bHousehold net income per month weighted by number of members ≥ 14 years or < 14 years [2]^cDefinition of migration status according to [1]