Table 10.
The inter- and Intra-observer reproducibility analysis results.
| Intra-Observer | ICC (95% CI) | p Value | Bland-Altman Bias (LOA) |
p Value |
|---|---|---|---|---|
| LVGLS | 0.977 (0.942–0.991) | <0.0001 | −0.1 (−1.45 to 1.35) | 0.2 |
| RVFWLS | 0.953 (0.882–0.982) | <0.0001 | 0.055 (−3.34 to 3.45) | 0.433 |
| RV4CLS | 0.927 (0.815–0.971) | <0.0001 | 0.01 (−3.80 to 3.82) | 0.827 |
| LALSr | 0.859 (0.533–0.950) | <0.0001 | 3.025 (−5.76 to 11.81) | 0.511 |
| LALScd | 0.756 (0.315–0.907) | <0.0001 | 3.305 (−6.86 to 13.47) | 0.774 |
| LALScp | 0.792 (0.471–0.918) | 0.001 | −0.46 (−8.54 to 7.62) | 0.824 |
| Inter-observer | ||||
| LVGLS | 0.924 (0.809–0.970) | <0.0001 | −0.17 (−2.55 to 2.39) | 0.497 |
| RVFWLS | 0.920 (0.795–0.968) | <0.0001 | 0.050 (−4.14 to 4.24) | 0.995 |
| RV4CLS | 0.882 (0.707–0.953) | <0.0001 | −0.75 (−5.41 to 3.91) | 0.918 |
| LALSr | 0.734 (0.114–0.907) | <0.0001 | 4.639 (−6.07 to 15.35) | 0.302 |
| LALScd | 0.778 (0.367–0.917) | <0.0001 | 3.3 (−6.94 to 13.54) | 0.775 |
| LALSct | 0.719 (0.311–0.887) | 0.004 | −1.21 (−9.27 to 6.85) | 0.152 |
ICC: intraclass correlation coefficient, LOA: 95% limit of agreement, LVGLS: Left ventricle global longitudinal strain, RVFWLS: Right ventricle free wall longitudinal strain RV4CLS: Right ventricle four-chamber longitudinal strain, LALSr: Left atrial longitudinal strain reservoir phase, LALScd: Left atrial longitudinal strain conduct phase, LALSct: Left atrial longitudinal strain contraction phase.