Table 2.

ROC curve analysis of TAPSE, Sm, Em/Am, RVFAC and LVEF

Variable	Cut-off	AUC	AUC SE	95% CI	Sensitivity	Specificity
Sm	9.80	0.925	0.048	0.83-1.01	0.95	0.83
TAPSE	16.40	0.950	0.035	0.88-1.01	0.85	0.75
Em/Am	0.80	0.892	0.066	0.76-1.01	0.95	0.66
RVFAC	25%	0.887	0.065	0.76-1.01	0.95	0.75
LVEF	39%	0.927	0.050	0.83-1.02	0.84	0.80

Receiver operating characteristics (ROC) curves of TAPSE, Sm, Em/Am, RVFAC and LVEF in prediction of duration of weaning process. The areas under the curve (AUC), along with their standard error (SE) and 95% confidence intervals (CI), as well as the cut-off values of studying variables are given with their respective sensitivity and specificity.