Table 1

Demographic and clinical characteristics

CharacteristicsValue
No.104
Age, y (mean ± SD)45 ± 15
Female, no. (%)82 (79)
IgG isotype, no. (%)86 (83)
    dRVVT mixing (mean ± SD)1.78 ± 0.5
    IgG aCL, GPL units (mean ± SD)102 ± 91
    IgG aβ2GPI, units (mean ± SD)123 ± 154
IgM isotype, no. (%)
    dRVVT mixing18 (17)
    IgM aCL, GPL units (mean ± SD)1.42 ± 0.3
    IgM aβ2GPI, units (mean ± SD)81 ± 58
Reason for initial testing, no. (%)
    Prolonged aPTT55 (53)
    Autoimmune disorder39 (37)
    Family history for thrombosis4 (4)
    Migraine2 (2)
Autoimmune disorders, no. (%)
    SLE14 (13)
    Other35 (34)
Risk for arterial thrombosis* no. (%)34 (33)
Risk for venous thrombosis no. (%)30 (29)
  • dRVVT indicates diluted Russell viper venom time; and aPTT, activated partial thromboplastin time.

  • * Considered risk factors for arterial thrombosis: diabetes mellitus, hypertension, hypercholesterolemia, obesity, smoking habit, and family history.

  • Considered risk factor for venous thrombosis: recent surgical intervention, perioperative immobilization, oral estroprogestinic treatment, pregnancy, malignancy, family history, thrombophilia, and previous VTE.