Participant characteristics.
| Vasculitis Type | N (% of Cohort) |
|---|---|
| Behçet disease | 48 (7) |
| Central nervous system vasculitis | 12 (2) |
| Eosinophilic granulomatosis with polyangiitis | 121 (17) |
| Giant cell arteritis | 32 (5) |
| Granulomatosis with polyangiitis | 332 (48) |
| IgA vasculitis | 12 (2) |
| Microscopic polyangiitis | 42 (6) |
| Polyarteritis nodosa | 36 (5) |
| Takayasu arteritis | 57 (8) |
| Total | 692 |
| Age, yrs, median (range) | 54 (18–86) |
| Female sex (%) | 70 |
| Race (%) | |
| White | 89 |
| Asian | 2 |
| African American | 2 |
| Other | 7 |
| Ethnicity (% non-Hispanic) | 97 |
| Highest level of education (%) | |
| No high school diploma | 2 |
| High school graduate | 32 |
| College graduate | 30 |
| Advanced degree | 36 |
| Annual income (USD) | |
| Less than $25,000 | 10 |
| $25,000–$74,999 | 36 |
| More than $75,000 | 38 |
| Prefer not to answer | 16 |
| Place of birth (%) | |
| United States | 68 |
| Europe | 16 |
| Latin America | 10 |
| Other | 6 |
| Disease duration, yrs, median (range) | 7 (0–41) |
| Disease activity (% active) | 55 |
| Disease extent (% severe) | 46 |
| At least 1 relapse (% yes) | 72 |