PsA patient demographic and clinical characteristics according to physician-reported patient flare status.
| Overall, N = 2238 | Currently in Flarea, n = 168 | Not Currently Flaring, But Flared in Last 12 Monthsa, n = 492 | Not Flared Ever/In Last 12 Monthsa, n = 1578 | P | |
|---|---|---|---|---|---|
| Age, yrs, mean (SD) | 48.7 (13.2) | 49.8 (13.1) | 48.5 (12.3) | 48.6 (13.5) | 0.53 |
| Age group, yrs, n | 2238 | 168 | 492 | 1578 | |
| 18-29 | 7.0 | 7.1 | 5.9 | 7.4 | 0.44 |
| 30-39 | 19.8 | 16.7 | 20.1 | 20.1 | |
| 40-49 | 25.6 | 23.2 | 26.2 | 25.6 | |
| 50-59 | 25.7 | 29.2 | 28.3 | 24.6 | |
| 60-69 | 15.6 | 16.1 | 15.9 | 15.5 | |
| 70-79 | 5.1 | 6.5 | 3.5 | 5.4 | |
| ≥ 80 | 1.1 | 1.2 | 0.2 | 1.3 | |
| Male | 53.8 | 53.6 | 54.5 | 53.7 | 0.95 |
| White | 90.4 | 90.5 | 89.0 | 90.8 | 0.03 |
| BMI, mean (SD) | 26.8 (4.7) | 26.8 (5.0) | 26.9 (5.1) | 26.8 (4.6) | 0.82 |
| Current smoker | 20.2 | 20.1 | 21.7 | 19.7 | 0.90 |
| Employment, n | 2152 | 163 | 481 | 508 | |
| Full time | 58.1 | 43.6 | 55.5 | 60.5 | < 0.001 |
| Part time | 11.0 | 9.2 | 12.9 | 10.6 | |
| Long-term sick leave | 2.6 | 10.4 | 3.7 | 1.5 | |
| Homemaker | 6.6 | 11.0 | 7.7 | 5.7 | |
| Student | 2.5 | 3.1 | 1.7 | 2.7 | |
| Unemployed | 5.1 | 9.8 | 5.6 | 4.4 | |
| Retired | 14.3 | 12.9 | 12.9 | 14.9 | |
| Time since onset of symptoms, mos, n | 1365 | 108 | 326 | 931 | |
| Mean (SD) | 78.0 (86.8) | 100.8 (103.6) | 66.9 (72.3) | 79.3 (88.7) | 0.002 |
| Time since diagnosis, mos, n | 1772 | 133 | 398 | 1241 | |
| Mean (SD) | 60.0 (71.7) | 68.3 (95.3) | 51.3 (65.7) | 61.9 (70.4) | 0.01 |
| Current disease severity, n | 1772 | 133 | 492 | 1578 | |
| Mild | 75.0 | 20.8 | 70.3 | 82.2 | < 0.001 |
| Moderate | 22.4 | 60.1 | 28.3 | 16.5 | |
| Severe | 2.6 | 19.0 | 1.4 | 1.3 |
Values are expressed as % unless indicated otherwise. Values in bold are significant at P < 0.05. Patients were compared, using parametric or nonparametric tests as appropriate (ANOVA for numeric variables, Kruskal-Wallis test for ordinal variables, and chi-square test for categorical variables).
↵a Flare status reported by physician. PsA: psoriatic arthritis.