Table 6. Determination of test accuracy using Sansure, STAT-NATⒷ, and Roche RT-qPCR kits.

CI: confidence interval; Sn: sensitivity; Sp: specificity; LR+: likelihood ratio for a positive test; LR-: likelihood ratio for a negative test; RT-qPCR: quantitative reverse transcription-polymerase chain reaction

	Diagnostic accuracy with 95% CI
RT-qPCR kit	Sn (%)	Sp (%)	Overall acuracy (%)	LR+	LR-
Sansure	62.24 (51.88-71.84)	96.74 (90.77-99.32)	78.95 (72.46-84.51)	19.09 (6.21-58.72)	0.39 (0.30-0.50)
STAT-NATⒷ	83.56 (73.05-91.21)	97.80 (92.29-99.73)	91.46 (86.09-95.25)	38.02 (9.62-150.28)	0.17 (0.10-0.28)
Roche	96.83 (89.00-99.61)	89.00 (81.17-94.38)	93.17 (88.10-96.54)	8.80 (5.03-15.40)	0.04 (0.01-0.14)