Table 3.

AUC, sensitivity, specificity and threshold of the strains, RVEF and LVEF for differentiating PAH patients from normal controls.

Variables	AUC	Sensitivity	Specificity	Threshold
${\epsilon }_{LL}^{RV}$,%	0.958	88	100	−13.1
RVEF,%	0.910	71	94	50
${\epsilon }_{RR}^{RV}$,%	0.848	82	88	19.42
${\epsilon }_{LL}^{Sep}$,%	0.827	71	82	−15.4
${\epsilon }_{LL}^{LV}$,%	0.820	88	71	−15.1
${\epsilon }_{CC}^{LV}$,%	0.796	65	88	−13.2
${\epsilon }_{RR}^{Sep}$,%	0.782	65	88	9.8
${\epsilon }_{CC}^{Sep}$,%	0.765	82	82	−5.0
${\epsilon }_{RR}^{LV}$,%	0.758	77	76	31.1
${\epsilon }_{CC}^{RV}$,%	0.744	77	65	−8.8
LVEF,%	0.467	71	47	65

AUC: area under the receiver operating characteristic curve; ${\epsilon }_{LL}^{RV}$: right ventricular peak longitudinal strain; RV: right ventricular; EF: ejection fraction; ${\epsilon }_{RR}^{RV}$: right ventricular peak radial strain; ${\epsilon }_{LL}^{Sep}$: septum peak longitudinal strain; ${\epsilon }_{LL}^{LV}$: left ventricular peak longitudinal strain; ${\epsilon }_{CC}^{LV}$: left ventricular peak circumferential strain; ${\epsilon }_{RR}^{Sep}$: septum peak radial strain; ${\epsilon }_{CC}^{Sep}$: septum peak circumferential strain; ${\epsilon }_{RR}^{LV}$: left ventricular peak radial strain; ${\epsilon }_{CC}^{RV}$: right ventricular peak circumferential strain; LV: left ventricular.