Contribution of IgG aPL antibodies in the upper tertile to the risk of thrombosis and abortions of LA-positive patients enrolled in the WAPS study. The numbers of patients with events on the number of patients with LA-positive and IgG antibody in the highest tertile are reported in brackets. Analysis was age- and sex-adjusted. The numbers of patients with events on the number of LA-positive patients with antibodies in the highest tertile are reported in brackets. Total thrombosis indicates that anamnestic arterial and venous thrombosis were combined.