Study sites | Contacted n = 3217 | Participation n = 1161 (36.1%) | Non-participation n = 2057 (63.9%) | ||
---|---|---|---|---|---|
Germany | 927 | 291 | (31.4%) | 636 | (68.6%) |
France | 676 | 311 | (46.0%) | 365 | (54.0%) |
The Netherlands | 882 | 265 | (30.0%) | 617 | (70.0%) |
Poland | 331 | 108 | (32.6%) | 223 | (67.4%) |
Sweden | 241 | 131 | (54.4%) | 110 | (45.6%) |
The United Kingdom | 160 | 55 | (34.3%) | 105 | (65.7%) |