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Table 4 Performance of blaCTX-M detection to predict phenotypic resistance of Escherichia coli

From: Molecular detection of blaCTX-M gene to predict phenotypic cephalosporin resistance and clinical outcome of Escherichia coli bloodstream infections in Vietnam

Antibiotic

Sensitivity

% (95% CI)

Specificity

% (95% CI)

PPV

% (95% CI)

NPV

% (95% CI)

ESBL

87 (76–93)

54 (39–68)

73 (61–82)

74 (56–87)

CTX

85 (75–92)

68 (49–82)

86 (76–93)

66 (48–80)

CAZ

85 (72–93)

44 (31–57)

57 (45–67)

77 (59–89)

FEP

90 (76–97)

46 (34–58)

50 (38–62)

89 (72–96)

  1. ESBL: Extended spectrum beta lactamases; CTX: Cefotaxime; CAZ: Ceftazidime; FEP: Cefepime; and CIP: Ciprofloxacin; PPV: positive predictive value; NPV: negative predictive value; 95% CI: 95% confidence interval