Table 1.

Demographics of the initial sample.

Variable	Distribution
Age	18–34 years old: 26%; 35–54 years old: 28%; 55 years old and above: 46%
Gender	Men: 50%; women: 50%
Education level	Low: 16%; medium: 45%; high: 39%
Region of residence	Noord-Holland, Zuid-Holland, and Utrecht: 46% Groningen, Friesland, and Drenthe: 10% Overijssel, Gelderland, and Flevoland: 21% Zeeland, Noord-Brabant, and Limburg: 24%