Table 1.
Characteristics of the participants
| Dutch general population study sample | Dutch general population 2016a | Difference between study sample and population in 2016 | US sampleb | |
|---|---|---|---|---|
| N (%) | % | % | N (%) | |
| Number of patients | 1002 | 13,562,539 | 1008 | |
| Age (years) | ||||
| 18–39 | 316 (31.5) | 33.7 | –2.2 | |
| 40–65 | 457 (45.6) | 43.6 | 2.0 | |
| > 65 | 229 (22.9) | 22.7 | 0.2 | |
| Mean (SD) in years | 51 (17) | 56 (15) | ||
| Gender | ||||
| Male | 477 (47.6) | 49.2 | –1.6 | 336 (40.8) |
| Female | 525 (52.4) | 50.8 | 1.6 | 487 (59.2) |
| Educationc | ||||
| Low | 294 (29.3) | 30.2 | –0.9 | 3 (0.3) |
| Middle | 427 (42.6) | 40.2 | 2.4 | 171 (17.0) |
| High | 281 (28.0) | 29.6 | –1.6 | 823 (81.6) |
| Regiond | ||||
| North | 102 (10.2) | 10.2 | 0.0 | |
| East | 199 (19.9) | 20.8 | –0.9 | |
| South | 201 (20.1) | 21.6 | –1.5 | |
| West | 497 (49.6) | 47.4 | 2.2 | |
| Ethnicity | ||||
| Native | 774 (77.2) | 78.6 | –1.4 | White: 74.4% |
| First and second generation western immigrant | 127 (12.6) | 10.3 | 2.4 | |
| First and second generation non-western immigrant | 101 (10.1) | 11.2 | –1.1 |
aBased on data from statistics Netherlands (http://www.cbs.nl)
bOf the total sample of 1008, we used 429 people with complete data for the Ability to Participate in Social Roles and Activities item bank and 424 people with complete data for the Satisfaction with Social Roles and Activities item bank. Number of missing values: age: 6, gender: 185, education: 185, ethnicity: 188
cLow = primary school, lower levels of secondary school (in Dutch: VMBO or lower), lower vocational education; middle = higher levels of secondary school (in Dutch: HAVO/VWO), middle vocational education; high = at least first year of bachelor degree
dThree missing values in the Dutch sample