Figure 2. ROC curves of dichotomous state variables of the
models of FEFs combined with FENO in predicting positive bronchial
provocation tests (n = 692).
(A) FEF50% combined with FENO. AUCModel= 0.809 (95%CI, 0.786-0.878);
(B) FEF75% combined with FENO. AUCModel= 0.797 (95%CI, 0.768-0.866);
(C) FEF25%–75% combined with FENO.
AUCModel = 0.802 (95%CI, 0.780-0.874).
The abbreviations are as defined for Figure 1.