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Table 2 DP-HMGS exhibited uniformly high sensitivity of DP detection compared to the sequencing method

From: Clinical application of a multiplex genetic pathogen detection system remaps the aetiology of diarrhoeal infections in Shanghai

Pathogens

HMGS

Sequencing

Sensitivity

Specificity

PPV

NPV

Accuracy

+

Vibrio

+

39

1

0.975

0.998

0.975

0.998

0.997

1

572

S. typhimurium

+

41

1

1.000

0.998

0.976

1.000

0.998

0

571

S. enteritis

+

4

2

0.667

0.997

0.667

0.997

0.993

2

605

Shigella

+

9

1

1.000

0.998

0.900

1.000

0.998

0

603

C. difficile

+

28

0

1.000

1.000

1.000

1.000

1.000

0

585

C. jejuni

+

44

0

0.978

1.000

1.000

0.998

0.998

1

568

Y. enterocolitica

+

1

0

1.000

1.000

1.000

1.000

1.000

0

612

EPEC

+

151

0

1.000

1.000

1.000

1.000

1.000

0

462

ETEC

+

29

2

1.000

0.997

0.935

1.000

0.997

0

582

EAEC

+

27

0

1.000

1.000

1.000

1.000

1.000

0

586

EIEC

+

8

1

1.000

0.998

0.889

1.000

0.998

0

604

EHEC

+

4

0

1.000

1.000

1.000

1.000

1.000

0

609

E. coli O157

+

6

2

1.000

0.997

0.750

1.000

0.997

0

605

Norovirus

+

31

7

1.000

0.988

0.816

1.000

0.982

0

575

Rotavirus

+

55

2

1.000

0.996

0.964

1.000

0.990

0

556

Adenovirus

+

9

3

1.000

0.995

0.750

1.000

0.993

0

601

Astrovirus

+

4

0

1.000

1.000

1.000

1.000

0.997

0

609

  1. The outcomes of DP-HMGS and sequencing-based DP detection methods were compared. Sensitivity = TP/(TP + FN) × 100, Specificity = TN/(TN + FP) × 100; PPV and NPV were calculated as follows: PPV = TP/P, NPV = TN/N. Notably, the sensitivity of DP-HMGS is high and comparable to that of sequencing for virtually all DP species
  2. DP-HMGS diarrheal pathogens high-throughput multiple genetic detection system, PPV positive predict value, NPV negative predict value