Table 2

AUCROC and 95% CI for LCI1/40, LCI1/30, LCI1/20 LCI1/10 and inverse FEV1% predicted (1.0 indicating best performance, 0.5 indicating poor performance)

AUCROC95% CIp Value
LCI1/400.890.80 to 0.97<0.0001
LCI1/300.870.77 to 0.96<0.0001
LCI1/200.870.78 to 0.96<0.0001
LCI1/100.830.72 to 0.94<0.0001
FEV1% predicted (inverse)0.730.60 to 0.860.002
  • AUC, area under the curve; FEV1, forced expiratory volume in 1 s; LCI, Lung Clearance Index, ROC, receiver operating characteristic