Table 4.

Area under curve (AUC) results using MVV and different multiples of FEV₁ in denominator.

Peak ${\dot{V}}_E$/x⋅FEV1 x =	AUC (95% CI)	Best cutoff to maximize sensitivity and specificity	Sensitivity	Specificity
0.30	0.840∗ (0.776, 0.905)	0.819	0.816	0.705
0.35	0.840	0.702	0.816	0.705
0.40	0.840	0.614	0.816	0.705
MVV	0.695 (0.614, 0.785)	0.850	0.623	0.617

^∗95% CI identical for different multiples of FEV₁.