Table 1.

Performances of SAT-TB and culture methods with clinical specimens (n = 482)

SAT-TB result	No. of specimens with culture results		Mean %
	Positive	Negative	Sensitivity	Specificity	PPV	NPV
All samples			83.6%	79.4%	59.4%	93.0%
Positive	107	73
Negative	21	281
Group A			84.3%	76.1%	59.4%	92.1%
Positive	107	73
Negative	20	233
Group B			0%	100%	100%	98.0%
Positive	0	0
Negative	1	48