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Figure 3 | BMC Pulmonary Medicine

Figure 3

From: Relationship between CT air trapping criteria and lung function in small airway impairment quantification

Figure 3

Receiver-operating characteristic (ROC) curves show the diagnostic performance of E/I using dN2 as a functional test of airway obstruction (dN2 cut-off = 2.5% N2/l). The best threshold is reported, alongside the sensitivity and specificity: E/I MLD = 0.89 (0.70; 0.73) – E/I -850–1024 = 0.32 (0.63; 0.67) – E/I -850–910 = 0.29 (0.79; 0.61).

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