Table 12: Pairwise comparisons of sensitivity and specificity by subgroup.
| Subgroup | P value | |
|---|---|---|
| Sensitivity | Specificity | |
| Mean preoperative LVEF | ||
| LVEF <40% vs. ≥ 40% | .9204 | .9955 |
| Method of Functional Recovery Assessment | ||
| ECHO vs. cardiac MRI | .8942 | .4573 |
| ECHO vs. MUGA | .8942 | .2570 |
| ECHO vs. Ventriculography | .9868 | .4573 |
| cardiac MRI vs. MUGA | .8942 | .5758 |
| cardiac MRI vs. Ventriculography | .8942 | .2570 |
| MUGA vs. Ventriculography | .8942 | .2280 |
| Type of Radiotracer | ||
| PET perfusion tracer vs. SPECT perfusion tracer | .8942 | .5758 |
| PET perfusion tracer vs. FDG alone | .8942 | .4573 |
| SPECT perfusion tracer vs. FDG alone | .8942 | .9955 |
| Type of Segment | ||
| Revascularized vs. all dysfunctional segments | .8908 | .9970 |
| Unit of Analysis | ||
| Patient vs. vascular territories | .8942 | .9955 |
| Patient vs. segments | .8942 | .9955 |
| Vascular territories vs. segment | .8942 | .9955 |
Cardiac MRI refers to cardiac magnetic resonance imaging; ECHO, echocardiography; FDG, F-18-fluorodeoxyglucose; LVEF, left ventricular ejection fraction; PET, positron emission tomography; SPECT, single photon emission computed tomography