Table 5. ROC curve analysis of patients with normal LAVI in the NOHCM group diagnosed by each indicator and combined indicators.
| Variables | AUC (95% CI) | P value | Cut-off | Sensitivity | Specificity |
|---|---|---|---|---|---|
| LATEF | 0.751 (0.064–0.625) | 0.001 | 0.585 | 0.700 | 0.750 |
| LAPEF | 0.824 (0.715–0.932) | 0.000 | 0.265 | 0.733 | 0.857 |
| εs | 0.793 (0.680–0.907) | 0.000 | 38.005% | 0.633 | 0.821 |
| SRs | 0.743 (0.615–0.871) | 0.001 | 1.650 s−1 | 0.800 | 0.607 |
| εe | 0.818 (0.710–0.926) | 0.000 | 22.900% | 0.700 | 0.893 |
| SRe | 0.802 (0.690–0.913) | 0.000 | −1.655 s−1 | 0.833 | 0.643 |
| Combined | 0.838 (0.738–0.938) | 0.000 | 0.693 | 0.533 | 0.964 |
εe, passive strain; εs, total strain; AUC, area under curve; CI, confidence interval; LAVI, left atrial volume index; LATEF, left atrial total ejection fraction; LAPEF, left atrial passive ejection fraction; NOHCM, nonobstructive hypertrophic cardiomyopathy; ROC, receiver operating characteristic; SRe, peak early negative strain rate; SRs, peak positive strain rate.