Table 2 Benchmark of Typhi Pathogenwatch AMR predictions.

From: A global resource for genomic predictions of antimicrobial resistance and surveillance of Salmonella Typhi at pathogenwatch

Antibiotic

Total

TN

TP

FN

FP

Sensitivity (95% CI)

Specificity (95% CI)

PPV (95% CI)

PPV (95% CI)

VME rate

ME rate

Concordance (%)

AMP

875

461

402

4

8

0.99 (0.97–1.00)

0.98 (0.97–0.99)

0.98 (0.96–0.99)

0.99 (0.98–1)

0.01

0.02

98.63

CEP

348

256

90

2

0

0.98 (0.92–1.00)

1.00 (0.99–1.00)

1.00 (0.96–1.00)

0.99 (0.97–1.00)

0.02

0

99.43

CHL

913

518

375

6

14

0.98 (0.97–0.99)

0.97 (0.96–0.99)

0.96 (0.94–0.98)

0.99 (0.98–1.00)

0.02

0.03

97.81

CIP

1282

111

1065

49

57

0.96 (0.94–0.97)

0.66 (0.58–0.73)

0.95 (0.93–0.96)

0.69 (0.62–0.76)

0.04

0.32

91.73

SXT

912

513

367

7

25

0.98 (0.96–0.99)

0.95 (0.93–0.97)

0.94 (0.91–0.96)

0.99 (0.97– 0.99)

0.02

0.05

96.49

TCY

44

40

4

0

0

1.00 (0.40–1.00)

1.00 (0.91–1.00)

1.00 (0.40–1.00)

1.00 (0.91–1.00)

0

0

100

AZM

156

144

12

0

0

1.00 (0.74–1.00)

1.00 (0.97–1.00)

1.00 (0.74–1.00)

1.00 (0.97–1.00)

0

0

100

CST

41

41

0

0

0

1.00 (0.91–1.00)

1.00 (0.91–1.00)

0

100

MEM

132

132

0

0

0

1.00 (0.97– 1.00)

1.00 (0.97– 1.00)

0

100

  1. The total number of comparisons, true negatives (TN), true positives (TN), false negatives (FN), false positives (FN), sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), very major error (VME) rate, major error (ME) rate, and concordance are shown for ampicillin (AMP), chloramphenicol (CHL), broad-spectrum cephalosporins (CEP), ciprofloxacin (CIP), sulfamethoxazole-trimethoprim (SXT), tetracycline (TCY), azithromycin (AZM), colistin (CST) and meropenem (MEM). Confidence intervals (95%) are shown in parenthesis.