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Table 1 Performances of SAT-TB and culture methods with clinical specimens (n = 482)

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

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

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