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Table 5 True positive, true negative, false positive, and false negative values of MAST-Carba plus in comparison to PCR results

From: Ceftazidime-Avibactam plus aztreonam synergistic combination tested against carbapenem-resistant Enterobacterales characterized phenotypically and genotypically: a glimmer of hope

Klebsiella species isolates

E. coli isolates

KPC

Genotypic

Total

KPC

Genotypic

Total

Positive

Negative

Positive

Negative

No

No

No

No

Phenotypic

Positive

5

1

6

Phenotypic

Positive

11

0

11

Negative

4

70

74

Negative

6

3

9

Total

9

71

80

Total

17

3

20

MBL

Genotypic

Total

MBL

Genotypic

Total

Positive

Negative

Positive

Negative

No

No

No

No

Phenotypic

Positive

72

1

73

Phenotypic

Positive

19

0

19

Negative

5

2

7

Negative

1

0

1

Total

77

3

80

Total

20

0

20

OXA-48

Genotypic

Total

OXA-48

Genotypic

Total

Positive

Negative

Positive

Negative

No

No

No

No

Phenotypic

Positive

46

0

46

Phenotypic

Positive

9

0

9

Negative

12

22

34

Negative

10

1

11

Total

58

22

80

Total

19

1

20