Table 3.
Correlation between LA and anti-PS/PT antibodies.
| IgG anti-PS/PT | IgM anti-PS/PT | IgG and/or IgM anti-PS/PT | |
|---|---|---|---|
| Sensitivity (%) | 50 (33.8–66.2) | 87.5 (73.2–95.8) | 90 (76.3–97.2) |
| Specificity (%) | 100 (92.1–100) | 91.1 (78.8–97.5) | 91.1 (78.8–97.5) |
| PPV (%) | 100 | 89.7 (77.3–95.7) | 90 (77.8–95.8) |
| NPV (%) | 69.2 (62.3–75.4) | 89.1 (78.2–94.9) | 91.1 (80.1–96.3) |
| PLR | – | 9.84 (3.83–25.27) | 10.12 (3.95–25.95) |
| NLR | 0.50 (0.37-0.68) | 0.14 (0.06–0.31) | 0.11 (0.04–0.28) |
| Chi2 | 27.4 | 52.7 | 55.9 |
The performances of anti-PS/PT antibodies were calculated for all patients positive for LA.
PPV, positive predictive value; NPV, negative predictive value; PLR, positive likelihood ratio; NLR, negative likelihood ratio; Chi2, chi square test.