| All | RA | UIA | CSA | Other |
---|---|---|---|---|---|
No. patients | 790 | 368 | 139 | 169 | 114 |
Age*, years mean (SD) | 52.4 (15.5) | 55.5 (15.2) | 51.4 (15.4) | 46.3 (13.7) | 52.3 (16.5) |
Missing (no.) | n = 0 | n = 0 | n = 0 | n = 0 | n = 0 |
Sex, % female | 64.3 | 68.8 | 59.0 | 72.8 | 43.9 |
Missing (no.) | n = 0 | n = 0 | n = 0 | n = 0 | n = 0 |
Ethnicity,% | |||||
 White British | 60.7 | 58.2 | 59.7 | 60.4 | 71.1 |
 White Other | 4.7 | 4.6 | 3.6 | 6.6 | 3.5 |
 Asian or Asian British | 20.4 | 20.4 | 22.3 | 21.9 | 15.8 |
 Black or Black British | 7.8 | 9.0 | 10.8 | 4.8 | 5.3 |
 Other | 2.7 | 2.8 | 2.8 | 3.6 | 0.9 |
Missing or not stated (no.) | n = 27 | n = 18 | n = 1 | n = 4 | n = 4 |
Smoking status, % | |||||
 Current | 19.9 | 20.5 | 18.7 | 21.3 | 18.4 |
 Previous | 31.5 | 29.9 | 34.5 | 28.4 | 37.8 |
 Never | 47.2 | 49.2 | 45.3 | 49.7 | 43.2 |
 Missing (no.) | n = 8 | n = 2 | n = 2 | n = 1 | n = 3 |
BMI, kg/m2 mean (SD) | 28.7 (6.4) | 28.7 (6.5) | 28.0 (5.6) | 28.9 (7.1) | 29.5 (6.1) |
Missing (no.) | n = 41 | n = 24 | n = 5 | n = 8 | n = 4 |
Symptom duration*,days median (IQR) | 26.0 (13.3–54.4) | 24.1 (13.0–52.2) | 24.1 (13.0–57.0) | 34.0 (18.0–70.1) | 25.7 (10.5–55.7) |
Missing (no.) | n = 12 | n = 7 | n = 1 | n = 2 | n = 2 |