Assay

(N139)

TB culture

Sensitivity

(%)

Specificity

(%)

PPV

(%)

NPV

(%)

Accuracy

(%)

positive

negative

LFD-LAMP TB positive

35

12

85.4

(70.8 - 94.4)

87.8

(79.6 - 93.5)

74.5

(59.7 - 86.1)

93.5

(86.3 - 97.6)

87.1

LFD-LAMP TB negative

6

86

Xpert MTB/RIF ultrat positive

39

25

95.1

(83.5 - 99.4)

74.5

(64.7 - 82.8)

60.9

(47.9 - 72.9)

97.3

(90.7 - 99.7)

80.6

Xpert MTB/RIF ultrat negative

2

73

AFB smaer positive

29

11

70.7

(54.5 - 83.9)

88.8

(80.8 - 94.3)

72.5

(56.1 - 85.4)

87.9

(79.8 - 93.6)

83.4

AFB smaer negative

12

87