The Egyptian Heart Journal

Table 5 Accuracy of stress ECG test to diagnose ischemia when adding the QTd difference

From: Can QT dispersion improve the accuracy of stress ECG TMT in detecting myocardial ischemia in chronic stable CAD patients? A stress myocardial perfusion imaging study

Variable	Coefficient (β)	SE	P value	Acc.	Sensitivity	Specificity
Intercept	−1.082	0.378	0.0042	0.72	0.72	0.9191
Stress ECG test	2.863	0.789	0.0003
QTd difference	0.048	0.023	0.0378

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