| Autoantibodies | Prevalence No (%) |
| IgG aCL* | 286/366 (78.1) |
| Medium/high titres | 191/366 (52.2) |
| Low titre | 95/366 (26.0) |
| IgM aCL† | 144/363 (39.7) |
| Medium/high titres | 79/363 (21.8) |
| Low titre | 65/363 (17.9) |
| LA‡ | 149/339 (44.0) |
| LA and aCL§ | 162/334 (48.5) |
| Antinuclear antibodies | 119/370 (32.2) |
| Anti-dsDNA antibodies | 98/370 (26.5) |
| Anti-ENA antibodies | 77/370 (20.8) |
*Not determined in 4/370 (1.1%); †not determined in 7/370 (1.9%); ‡not determined in 31/370 (8.4%); §not determined in 36/370 (9.7%).
aCL, anticardiolipin antibody; aPL, antiphospholipid antibody; ENA, extractable nuclear antigens; LA, lupus anticoagulant.