|  | US (N = 148) | Canadian English (N = 66) | Canadian French (N = 16) | French (N = 18) | German (N = 37) | Italian (N = 22) | Spanish (n = 24) | Swedish (n = 9) |
---|---|---|---|---|---|---|---|---|---|
Gender | Male (%) | 111 (75.0) | 51 (77.3) | 14 (87.5) | 12 (66.7) | 26 (70.3) | 16 (72.7) | 19 (79.2) | 8 (88.9) |
 | Female (%) | 37 (25.0) | 15 (22.7) | 2 (12.5) | 6 (33.3) | 11 (29.7) | 6 (27.3) | 5 (20.8) | 1 (11.1) |
Age | Mean (SD) | 44.7 (12.5) | 39.82(10.5) | 45.3 (12.0) | 35.7 (8.0) | 41.9 (11.8) | 40.7 (10.8) | 38.0 (9.0) | 37.6 (9.1) |
 | Median (IQR) | 46.0 (34.0–55.0) | 41.0 (32.0–45.0) | 44.5 (38.3–53.8) | 34.5 (30.3–42.0) | 42.0 (33.0–52.5) | 44.0 (34.5–49.0) | 8.6 (5.7 – 17.1) | 36.0 (30.5 – 45.5) |
 | Range | 18.0–71.0 | 18.0–69.0 | 28.0–69.0 | 25.0–55.0 | 23.0–62.0 | 21.0–58.0 | 3.3 – 37.4 | 24.0 – 52.0 |
Disease duration | Mean (SD) | 11.0 (10.3) | 12.3 (7.5) | 17.0 (7.5) | 9.3 (8.0) | 9.7 (9.1) | 9.2 (9.4) | 12.2 (8.9) | 11.4 (9.4) |
 | Median (IQR) | 7.6 (2.4–18.3) | 11.6 (5.4–18.1) | 16.3 (10.3–22.6) | 9.8 (4.3–13.7) | 6.2 (1.9–15.4) | 4.9 (1.2–18.3) | 8.6 (5.7 – 17.1) | 11.7 (0.5 – 19.8) |
 | Range | 0.1–48.4 | 0.2–40.3 | 5.2–30.1 | 0.2–17.4 | 0.2–35.3 | 0.1–28.4 | 3.3 – 37.4 | 0.1 – 25.3 |