Table 2.
Imaging characteristics
| All Patients (n = 16 578) | MACE occurred (n = 1842) | No MACE (n = 14 736) | P-value | |
|---|---|---|---|---|
| Resting LVEF, median (IQR) | 62.9 (55.1–70.4) | 59.9 (49.0–68.7) | 63.2 (55.7–70.6) | <0.001 |
| Low resting LVEF (<40%), n (%) | 850 (5.1) | 239 (13.0) | 611 (4.2) | <0.001 |
| Resting TPD ≥10%, n (%) | 787 (4.8) | 180 (9.8) | 607 (4.1) | <0.001 |
| Stress LVEF, median (IQR) | 63.0 (55.3–59.8) | 59.6 (48.7–67.1) | 63.3 (55.9–70.1) | <0.001 |
| Eccentricity index, median (IQR) | 0.84 (0.83–0.86) | 0.84 (0.82–0.86) | 0.84 (0.83–0.86) | <0.001 |
| Shape index, median (IQR) | 57.3 (55.6–63.7) | 57.3 (55.6–63.7) | 57.3 (53.2–60.6) | <0.001 |
| Transient ischaemic dilation, n (%) | 707 (4.3) | 109 (5.9) | 598 (4.1) | <0.001 |
| Post-stress WMA, n (%) | 2290 (13.8) | 374 (20.3) | 1916 (13.0) | <0.001 |
| Burden of ischaemia, n (%) | ||||
| None (<1% ischaemic TPD), n (%) | 5338 (32.2) | 397 (21.5) | 4941 (33.5) | <0.001 |
| Minimal (1 to <5% ischaemic TPD), n (%) | 7435 (44.9) | 756 (41.0) | 6679 (45.3) | <0.001 |
| Mild (5 to <10% ischaemic TPD), n (%) | 2961 (17.9) | 502 (27.3) | 2459 (16.7) | <0.001 |
| Moderate (10 to <15% ischaemic TPD), n (%) | 554 (3.3) | 129 (7.0) | 425 (2.9) | <0.001 |
| Severe (>= 15% ischaemic TPD), n (%) | 290 (1.8) | 58 (3.2) | 232 (1.6) | <0.001 |
IQR, interquartile range; LVEF, left ventricular ejection fraction; TPD, total perfusion deficit; WMA, wall motion abnormality.