Table 3.

ROC analyses for PIF cut-off values after repeated inhalations

Inhalation repeats	PIF cut-off value (L/min)	Sensitivity (%)	Specificity (%)	AUC	Positive predictive value (%)	Negative predictive value (%)
I	140	84	53	0.69	81	59
II	120	86	69	0.83	69	86
III	100	89	76	0.89	59	95
IV	100	87	71	0.86	48	95

AUC area under the ROC curve