Table 3a.

Sensitivity and specificity of the QuickNavi™-COVID19 Ag among overall patients.

		real-time RT-PCR
		Positive	Negative
Antigen test	Positive	91	0
	Negative	14	1081
Sensitivity (%)		86.7 (78.6–92.5)
Specificity (%)		100 (99.7–100)
Positive predictive value (%)		100 (96.0–100)
Negative predictive value (%)		98.7 (97.9–99.3)

Sensitivity, specificity, positive predictive value, and negative predictive value are provided with 95% confident intervals.RT-PCR, reverse transcription polymerase chain reaction