. 2021 Feb 19;21:90. doi: 10.1186/s12887-021-02523-4

Table 3.

Diagnostic values of different methods with a real-time polymerase chain reaction as the standard

	RT-PCR		Kappa	Sensitivity	Specificity	Accuracy	Youden Index
	Positive	Negative	Kappa	Sensitivity	Specificity	Accuracy	Youden Index
MP-IgM (PA)
Positive	225	107	0.526	74.0%	79.7%	77.6%	53.7%
Negative	79	419	0.526	74.0%	79.7%	77.6%	53.7%
MP-IgM (GICT)
Positive	151	71	0.384	49.7%	86.5%	73.0%	36.2%
Negative	153	455	0.384	49.7%	86.5%	73.0%	36.2%
MP-RNA (SAT)
Positive	133	13	0.464	43.8%	97.5%	77.8%	41.2%
Negative	171	513	0.464	43.8%	97.5%	77.8%	41.2%
7 RNAs
Positive	81	57	0.179	26.6%	89.2%	66.3%	15.8%
Negative	223	469	0.179	26.6%	89.2%	66.3%	15.8%

SAT simultaneous amplification and testing

PA particle agglutination

GICT immune colloidal gold technique