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Assessment of sensitivity, specificity, positive predictive value, and negative predictive value of the anti-tTG titer ≥ 180 U/mL.
| Test | Marsh III | <Marsh III | Total |
|---|---|---|---|
| Anti-tTG ≥ 180 U/mL (positive) | 40 | 11 | 51 |
| Anti-tTG < 180 U/mL (negative) | 9 | 21 | 30 |
Sensitivity 81.6%, specificity 65.6%, PPV 78.4%, NPV 70%.
