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Sample characteristics by country
| Finland | The Netherlands | Norway | Portugal | Spain | Sweden | UK | Total | |
|---|---|---|---|---|---|---|---|---|
| Sample size | 135 | 165 | 137 | 123 | 230 | 125 | 125 | 1042 |
| Percentage of females (%) | 82.2 | 88.5 | 73.7 | 71.5 | 75.2 | 76.0 | 79.2 | 78.0 |
| Median age (years) | 54 | 67 | 57 | 52 | 58 | 61 | 58 | |
| Median disease duration (years) | 10 | 12 | 7 | 11 | 10 | 15 | 13 | |
| Basic education (n) | 53 | 29 | 105 | 67 | 111 | 50 | 105 | 473 |
| Higher education (n) | 81 | 134 | 32 | 47 | 104 | 73 | 17 | 488 |
