Table 3. Performance characteristics of the QFAT (20 min.) in comparison with the FTS results (10 min).

Diagnostic test	Test results	FTS Positive	FTS Negative	Total	Sensitivity = 97.7% (96.9–98.6) Specificity = 99.2% (98.7–99.7) PPV = 97.7% (96.9–98.5) NPV = 99.2% (98.9–99.7) AUC = 0.976 (0.962–0.989) % agreement = 98.6% k value = 0.963 (P <0.001)
QFAT test (read at 20 min.)	Positive	303	7	310
	Negative	7	910	917
	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