Table 7.
Results of Intra- and Inter-observer agreement.
| Intraobserver agreement |
Interobserver agreement |
|||
|---|---|---|---|---|
| Variables | ICC | 95% CI | Mean difference | 95% CI |
| RV global strain | 0.99 | 0.96–0.99 | −0.30 | 2.69;−3.29 |
| Basal septal strain | 0.94 | 0.79–0.98 | −1.46 | 6.57;−9.49 |
| Mid septal strain | 0.97 | 0.89–0.99 | −0.21 | 5.23;−5.65 |
| Apical septal strain | 0.91 | 0.71–0.97 | 0.21 | 7.38;−6.96 |
| Basal RV free wall strain | 0.98 | 0.93–0.99 | −0.13 | 10.35;−10.61 |
| Mid RV free wall strain | 0.96 | 0.92–0.99 | −0.15 | 4.53;−4.83 |
| Apical RV free wall strain | 0.99 | 0.97–0.99 | −0.28 | 4.87;−5.43 |
| Basal septum strain rate | 0.97 | 0.90–0.99 | −0.04 | 0.33;−0.41 |
| Mid septum strain rate | 0.87 | 0.57–0.96 | 0.01 | 0.28;−0.26 |
| Apical septum strain rate | 0.75 | 0.27–0.93 | −0.05 | 0.28;−0.38 |
| Basal RV free wall strain rate | 0.79 | 0.36–0.94 | 0.53 | 2.17;−1.11 |
| Mid RV free wall strain rate | 0.86 | 0.54–0.96 | −0.99 | 2.77;−4.76 |
| Apical RV free wall strain rate | 0.73 | 0.23–0.92 | −0.05 | 0.28;−0.38 |
RV – right ventricle; ICC – intra-class correlation coefficient; CI – confidence interval.