Table 3.
Positive predictive value, negative predictive value, sensitivity, and specificity of a positive basophil test (BAT or BHRA) according to patients’ characteristics.
| Patients’ characteristics | Positive predictive value | Negative predictive value | Sensitivity | Specificity |
|---|---|---|---|---|
| ASST(+) | 80.0 | 61.8 | 53.3 | 85.0 |
| UAS7≥16 | 59.6 | 55.3 | 62.2 | 52.5 |
| Angioedema | 62.5 | 55.6 | 55.6 | 62.5 |
| Nocturnal symptoms | 62.0 | 60.0 | 68.9 | 52.5 |
| >5 days/week | 60.6 | 73.7 | 88.9 | 35.0 |
| Anti-TG/TPO | 59.1 | 48.4 | 28.9 | 76.9 |
| TSIgE<30 | 78.9 | 53.8 | 33.3 | 89.7 |
| TSIgE<30 + Anti-TG/TPO | 100.0 | 52.0 | 20.0 | 100 |
| ASST(+) + Angioedema | 86.4 | 58.7 | 42.2 | 92.5 |
| ASST(+) + Anti-TG/TPO | 90.0 | 50.7 | 20.0 | 97.4 |
| ASST(+) + TSIgE<30 | 100.0 | 54.2 | 26.7 | 100.0 |
ASST, autologous serum skin test; anti-TPO, anti-thyroperoxidase; anti-Tg, anti-thyroglobulin; UAS7, urticaria activity score 7; TSIgE, Total serum IgE in (U/mL).