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Table 5 Comparison of pyrosequencing and Bactec MGIT 960 DST

From: Pyrosequencing for rapid detection of Tuberculosis resistance in clinical isolates and Sputum samples from re-treatment Pulmonary Tuberculosis patients

Drugs and specimen

Pyro. methods

No. of samples by Bactec 960 method

Mean% (95% CI)

 

Clinical isolates

 

R

S

Sensitivity

Specificity

Accuracy

Kappa

RIF

R

152

1

94.4

97.6

95.0

0.86

 

S

9

40

89.7-97.0

87.4-99.6

  

INH

R

128

0

75.3

100

79.2

0.49

 

S

42

32

68.3-81.2

89.3-100.0

  

SM

R

107

3

79.3

95.4

84.5

0.68

 

S

28

62

71.7-85.2

87.3-98.4

  

EMB

R

71

10

58.7

87.7

70.3

0.43

 

S

50

71

49.8-67.1

78.7-93.2

  

OFL

R

108

1

86.4

98.7

91.1

0.82

 

S

17

77

79.3-91.3

93.1-99.8

  

AMK

R

32

0

82.1

100

96.5

0.88

 

S

7

159

67.3-91.0

97.6-100.0

  

Sputum samples

       

RIF

R

15

1

83.3

83.3

83.3

0.6

 

S

3

5

60.8-94.2

43.7-97.0

  

INH

R

13

0

76.5

100

83.3

0.66

 

S

4

7

52.7-90.4

64.6-100.0

  

SM

R

11

0

73.3

100

83.3

0.67

 

S

4

9

48.1-89.1

70.0-100.0

  

EMB

R

5

2

41.7

81.8

60.9

0.23

 

S

7

9

19.3-68.1

52.3-94.9

  

OFL

R

13

0

86.7

100

91.7

0.83

 

S

2

9

62.1-96.3

70.1-100.0

  

AMK

R

2

0

40

100

87.5

0.51

 

S

3

19

11.8-76.9

83.2-100.0

  
  1. CI: confidence interval.