Table 5.
C-statistics for major adverse cardiac event and mortality
| Variable | AUC | Confidence interval |
ROC comparison |
|---|---|---|---|
| MACE | |||
| LVEF | 0.69 | 0.61–0.76 | |
| LA LAS | 0.74 | 0.68–0.80 | 0.092 |
| LVEF + LA LAS | 0.74 | 0.68–0.81 | 0.011 |
| MO + IS | 0.65 | 0.58–0.73 | |
| LA LAS | 0.74 | 0.68–0.80 | 0.011 |
| MO + IS + LAS | 0.76 | 0.69–0.83 | 0.004 |
| GLS | 0.69 | 0.63–0.76 | |
| LA LAS | 0.74 | 0.68–0.80 | 0.247 |
| GLS + LAS | 0.75 | 0.69–0.81 | 0.016 |
| Mortality | |||
| LVEF | 0.66 | 0.54–0.78 | |
| LA LAS | 0.77 | 0.68–0.85 | 0.030 |
| LVEF + LA LAS | 0.76 | 0.68–0.85 | 0.018 |
| MO + IS | 0.62 | 0.49–0.74 | |
| LA LAS | 0.77 | 0.68–0.85 | 0.002 |
| MO + IS + LAS | 0.81 | 0.71–0.90 | 0.002 |
| GLS | 0.73 | 0.63–0.83 | |
| LAS | 0.77 | 0.68–0.85 | 0.568 |
| GLS + LAS | 0.79 | 0.70–0.87 | 0.141 |
P-values were calculated for the AUC comparisons of left-atrial (LA) long-axis strain (LAS) compared with as well as in addition to the following parameters: Left-ventricular ejection fraction (LVEF), microvascular obstruction (MO), infarct size (IS), as well as global longitudinal strain (GLS). Calculations were performed using the method proposed by de Long et al. for MACE and mortality occurrence separately. Numbers in bold indicate a statistical significance.