Table I.
Characteristics of the study groups
| Characteristic | APS (n = 24) | SLE (n = 28) | MCTD (n = 9) | RA (n = 43) |
|---|---|---|---|---|
| Age | 42 (19–68) | 34 (19–74) | 35 (19–60) | 60 (32–75) |
| Female (n [%]) | 14 (58) | 22 (78) | 7 (78) | 38 (88) |
| Disease duration (years) | 1 (0–16) | 2 (0–29) | 7 (1–34) | 8 (0–34) |
| CRP (mg/l) | 10 (1–82) | 4 (1–84) | 5 (1–8) | 13 (3–11) |
| ESR (mm/h) | 20 (2–63) | 22 (2–79) | 11 (2–105) | 36 (6–160) |
| Thrombocytopenia (%) | 17 | 14 | 33 | 5 |
| Leukocytopenia (%) | 9 | 40 | 11 | 2 |
| CAD (%) | 13 | 25 (n = 24 total) | 33 | 26 |
| Serology | Anti-dsDNA (+) 39% Anti-histon (+) 24% Anti-Ro (+) 29% Anti-La (+) 12% Anti-Scl-70 (+) 12% Anti-U1-RNP (+) 6% |
Anti-dsDNA (+) 75% Anti-histon (+) 29% Anti-Ro (+) 46% Anti-La (+) 25% Anti-Sm (+) 21% Anti-U1-RNP (+) 1% |
Anti-CENP-B (+) 22% Anti-U1-RNP (+) 100% Anti-U1-70 kD (+) 47% A (+) 29% C (+) 18% |
Anti-CCP (+) 79% Anti-RF (+) 64% |
APS – antiphospholipid syndrome, SLE – systemic lupus erythematosus, MCTD – mixed connective tissue disease, RA – rheumatoid arthritis.