Table 1. Performance characteristics of the QFAT in comparison with the FTS results at 10 minutes.

Diagnostic test	Test results	FTS Positive	FTS Negative	Total	Sensitivity = 95.5% (94.3–96.7) Specificity = 99.7% (99.4–99.9) PPV = 99.0% (98.4–99.6) NPV = 98.5% (97.8–99.2) AUC = 0.985 (0.975–0.995) % agreement = 98.9% k value = 0.970 (P <0.001)
QFAT test (at 10 min.)	Positive	296	3	299
	Negative	14	914	928
	Total	310	917	1227

In parenthesis—95% confidence intervals, PPV- positive predictive value, NPV- negative predictive value

AUC- area under the curve, k value- kappa statistics