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Characteristics of patients with SLE included in the analysis
| Characteristics | n (%) |
| Sex | |
| Female | 728 (93) |
| Male | 57 (7) |
| Ethnicity | |
| Caucasian | 406 (52) |
| African-American | 316 (40) |
| Other | 63 (8) |
| Age (years) at first included visit | |
| <30 | 99 (13) |
| 30–44 | 291 (37) |
| 45–59 | 292 (37) |
| 60+ | 103 (13) |
| Duration of time for lupus anticoagulant assessment (years) | |
| <3 | 82 (10) |
| 3–5 | 474 (60) |
| >5 | 229 (29) |
| Years of follow-up after lupus anticoagulant assessment | |
| <2 | 122 (16) |
| 2–5 | 165 (21) |
| 5–8 | 151 (19) |
| 8+ | 347 (44) |
