Table 1.
Characteristics of probable SLE cases and non-cases in the Sister Study.
| Probable SLE N = 124 |
Non-cases N = 50,465 |
|
|---|---|---|
| Median years (IQR) | ||
| Age at enrollment | 54 (47, 60) | 55 (60, 61) |
| Age at diagnosis | 43 (33, 50) | N/A |
| Time since diagnosis | 11 (3, 16) | N/A |
| N(%) | N(%) | |
| Race/ethnicitya | ||
| White | 86 (69) | 42,269 (84) |
| Non-White | 38 (31) | 8,181 (16) |
| Educational attainment | ||
| ≤High school degree | 16 (13) | 7,725 (15) |
| Some college or technical degree | 59 (48) | 17,010 (34) |
| 4-year college graduate | 25 (20) | 13,633 (27) |
| Professional or graduate degree | 24 (19) | 12,085 (24) |
aNon-Hispanic White and non-White (Black – 19% of cases versus 9% of non-cases, Hispanic 9% of cases versus 5% of non-cases, and other racial and ethnic groups – 3% cases and non-cases).