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Table 3 Diagnostic values of laboratory test methods with a fourfold or greater increase of IgG antibody titers of paired sera as the “gold standard”

From: Accuracy of IgM antibody testing, FQ-PCR and culture in laboratory diagnosis of acute infection by Mycoplasma pneumoniae in adults and adolescents with community-acquired pneumonia

 

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

PLR

IgM result

7.4

94.9

28.6

78.8

1.45

FQ-PCR result

40.7

88.8

50

84.5

3.63

Culture result

55.6

94.9

75

88.6

10.9

  1. PPV: Positive predictive values; NPV: Negative predictive values; PLR: Positive likelihood ratio.