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Table 5 Prediction of asthma using PC20 values of ≤25 mg/ml and ≤50 mg/ml

From: The correlation between the bronchial hyperresponsiveness to methacholine and asthma like symptoms by GINA questionnaires for the diagnosis of asthma

Sensitivity

Specificity

PPV*

NPV†

44.2

75.2

88.5

24.0

62.4

52.2

84.8

24.7

  1. Abbreviations: * PPV positive predictive value, † NPV negative predictive value.
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BMC Pulmonary Medicine

ISSN: 1471-2466

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