Predictive value of LAC titer, anti-β2GPI IgG titer, and sP-selectin and FVII levels in the overall LAC-positive population. (A) Histograms (percentage) of sensitivity, specificity, PPV, NPV, as indicated, for the LAC titer (AU), the anti-β2GPI IgG titer (GAU/mL), the combination of LAC- and anti-β2GPI IgG titer for the overall LAC-positive population with LAC titer more than 0 AU (n = 52-54); sP-selectin (ng/mL), FVII (%), and the combination of sP-selectin and FVII, for the overall (INR/FVII corrected) LAC-positive population (n = 54). (B) 2 × 2 Contingency tables for the LAC titer, the anti-β2GPI IgG titer, the combination of LAC titer and anti-β2GPI IgG titer, sP-selectin, FVII, and the combination of sP-selectin and FVII in the patient populations, subdivided as indicated. P values calculated with Fisher exact test are indicated for each 2 × 2 table.