Baseline characteristics of the PsA, psoriasis, and general population cohorts, including prevalence of OA codes at index date.
| PsA | Psoriasis | General Population | ||||
|---|---|---|---|---|---|---|
| N | (%) | N | (%) | N | (%) | |
| N | 6783 | 27,132 | 27,132 | |||
| Sex (% male) | 3327 | (49.05) | 13,308 | (49.05) | 13,308 | (49.05) |
| Age, age, yrs, median (IQR)a | 49 | (39–59) | 49 | (39–59) | 49 | (39–59) |
| Follow-up postindex, yrs, mean (SD) | 5.8 | (4.1) | 5.5 | (4.1) | 5.5 | (4.1) |
| Duration of psoriasis, yrs, mean (SD)a | 11.3 | (10.9) | 11.8 | (10.6) | – | – |
| BMIb | ||||||
| < 25.0 | 869 | (12.8) | 4190 | (15.4) | 4149 | (15.3) |
| 25.0–29.9 | 1226 | (18.1) | 4511 | (16.6) | 4257 | (15.7) |
| 30.0–34.9 | 844 | (12.4) | 2602 | (9.6) | 2254 | (8.3) |
| ≥ 35.0 | 641 | (9.5) | 1746 | (6.4) | 1252 | (4.6) |
| Unknown | 3203 | (47.2) | 14,083 | (51.9) | 15,220 | (56.1) |
| Smoking statusb | ||||||
| Nonsmoker | 3059 | (45.1) | 11,001 | (40.6) | 13,533 | (49.9) |
| Current smoker | 1605 | (23.7) | 8199 | (30.2) | 6509 | (24.0) |
| Ex-smoker | 2084 | (30.7) | 7480 | (27.6) | 6067 | (22.4) |
| Unknown | 35 | (0.5) | 452 | (1.7) | 1023 | (3.8) |
| Baseline OA prevalencec | 1497 | (22.1) | 3408 | (12.6) | 2974 | (11.0) |
| < 40 yrs at index | 56 | (3.2) | 60 | (0.9) | 49 | (0.7) |
| ≥ 40 yrs at index | 1441 | (28.6) | 3348 | (16.6) | 2925 | (14.5) |