Table 2.

Participants' demographic characteristics (N = 54,010^*).

	N (%)
Sex
Female	35,055 (65%)
Male	18,862 (35%)
Age
16–24 years	2,783 (5%)
25–39 years	12,603 (23%)
40–54 years	15,540 (29%)
55–69 years	15,273 (28%)
70+ years	7,811 (14%)
Educational level
Low	6,815 (13%)
Middle	16,060 (30%)
High	30,517 (57%)
Living alone
No	45,333 (84%)
Yes	8,677 (16%)
Country of birth
The Netherlands	51,222 (95%)
Other	2,675 (5%)
Medical condition
No	40,798 (76%)
Yes	13,107 (24%)

^*Due to missing values, for some variables numbers may not add up to the overall total number of unique participants.