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Table 4 Sensitivity, specificity, positive predictive value and negative predictive value for infection markers in diagnosing bacteremia

From: Lymphocytopenia and neutrophil-lymphocyte count ratio predict bacteremia better than conventional infection markers in an emergency care unit

 

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

CRP level

75.0

37.0

54.3

59.6

WBC count

57.6

53.3

55.2

55.7

Neutrophil count

57.6

59.8

58.9

58.5

Lymphocyte count

73.9

57.6

63.6

68.8

NLCR

77.2

63.0

67.6

73.4

  1. Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of the C-reactive protein (CRP) level (cut-off ≥50 mg/l), white blood cell (WBC) count (cut-off < 4.0 × 109/l or > 12.0 × 109/l), neutrophil count (cut-off > 10.0 × 109/l), lymphocyte count (cut off < 1.0 × 109/l) and the neutrophil-lymphocyte count ratio (NLCR) (cut-off > 10.0) in diagnosing bacteremia.