Bivariate analysis of 90 children with rheumatic diseases. Continuous variables are represented as mean ± SD. Categorical variables are represented as frequencies (percentages).
| Disease Variable | Primary APS, SLE, MCTD, SS, n = 59 (%) | Other*, n = 31 (%) | p |
|---|---|---|---|
| Transiently positive aPL | 20 (33.9) | 1 (3.2) | 0.001 |
| Persistently positive aPL | 19 (32.2) | 0 | < 0.001 |
| Mean A5R, % | 227 ± 50 | 247 ± 32 | 0.030 |
| Thrombosis | 10 (16.9) | 0 | 0.014 |
↵* Other autoimmune diseases included juvenile idiopathic arthritis, juvenile dermatomyositis, systemic sclerosis, and systemic vasculitis. APS: antiphospholipid antibody syndrome; aPL: antiphospholipid antibodies; SLE: systemic lupus erythematosus; MCTD: mixed connective tissue disease; SS: Sjögren’s syndrome; A5R: annexin A5 resistance assay.