Table 2.
Demographic statistics (N = 1205)
| Variable | Mean | SD | Min | Max |
|---|---|---|---|---|
| Age | 45.0 | 15.0 | 18 | 86 |
| Gender (% female) | 50.8 | |||
| Partner (% yes) | 67.0 | |||
| Children (% yes) | 58.3 | |||
| Monthly income (%) | ||||
| Group 1 (<€1000) | 23.5 | |||
| Group 2 (€1000–€1999) | 31.5 | |||
| Group 3 (€2000–€3499) | 32.3 | |||
| Group 4 (≥€3500) | 12.7 | |||
| Education status (%) | ||||
| Elementary school | 25.5 | |||
| High school | 42.1 | |||
| University | 32.4 | |||
| Health status | ||||
| VAS (0–100) | 80.1 | 15.0 | 15 | 100 |
| Opt-out (%) | 10.9 |
Number of observations per version of the questionnaire: 411 for age group 10; 410 for age group 40; 384 for age group 70; General population statistics: 45 years of age (18+), 50.9 % female (18+) and 33.0 % elementary school, 40.2 % high school, 26.8 % university (15+) [http://statline.cbs.nl/Statweb/?LA=en]
SD standard deviation, VAS visual analogue scale