Application of real-time simultaneous amplification and testing method to accurately and rapidly detect extra-pulmonary tuberculosis

Table 2 Performances of SAT-TB and culture methods compared with clinical assessment of patients (n = 482)

		No. of cases with clinical diagnosis of TB		Mean %
Method	Result	Positive	Negative	Sensitivity	Specificity	PPV	NPV
SAT-TB assay				41.6%	100%	100%	16.2%
	Positive	180	0
	Negative	253	49
Culture methods				29.3%	98.0%	99.2%	13.6%
	Positive	127	1
	Negative	306	48

ISSN: 1471-2334