Table 3.
Inter-observer variability of right and left ventricular parameters.
| Obs1 vs. Obs2 | Obs1 vs. Obs3 | Obs2 vs. Obs3 | ||||
|---|---|---|---|---|---|---|
| RV | LV | RV | LV | RV | LV | |
| EF (%) | ||||||
| Mean | 53.9 ± 11.3 | 54.0 ± 15.3 | 52.6 ± 10.8 | 54.7 ± 15.2 | 54.0 ± 10.8 | 53.8 ± 15.5 |
| Mean difference | 2.7 ± 7.2 | − 1.8 ± 4.5 | −0.2 ± 9.3 | 0.4 ± 5.9 | 2.5 ± 9.9 | −1.4 ± 5.8 |
| CV | 13.3 | 8.2 | 17.8 | 10.8 | 18.4 | 10.7 |
| ICC | 0.800 | 0.953 | 0.689 | 0.929 | 0.639 | 0.931 |
| EDV index (mL/m2) | ||||||
| Mean | 75.2 ± 19.6 | 95.7 ± 33.0 | 76.2 ± 20.5 | 94.7 ± 32.9 | 74.6 ± 21.1 | 94.8 ± 32.4 |
| Mean difference | −3.1 ± 8.9 | 0.2 ± 5.4 | 1.2 ± 9.9 | 1.8 ± 6.5 | −1.9 ± 10.8 | 2.0 ± 6.6 |
| CV | 11.9 | 5.7 | 13.0 | 6.9 | 14.5 | 7.0 |
| ICC | 0.892 | 0.987 | 0.890 | 0.979 | 0.875 | 0.978 |
| ESV index (mL/m2) | ||||||
| Mean | 35.6 ± 16.1 | 47.9 ± 32.5 | 36.9 ± 16.4 | 46.4 ± 31.5 | 35.2 ± 16.4 | 47.4 ± 31.8 |
| Mean difference | −3.4 ± 5.9 | 1.9 ± 3.7 | 0.8 ± 6.7 | 1.0 ± 5.7 | −2.6 ± 7.4 | 3.0 ± 6.1 |
| CV | 12.4 | 7.7 | 18.1 | 12.3 | 20.9 | 12.8 |
| ICC | 0.917 | 0.992 | 0.921 | 0.983 | 0.894 | 0.978 |
| Stroke V Index (mL/m2) | ||||||
| Mean | 39.8 ± 11.4 | 47.8 ± 11.7 | 39.3 ± 10.8 | 48.2 ± 12.3 | 39.7 ± 11.4 | 47.4 ± 12.0 |
| Mean difference | 0.6 ± 7.3 | −1.7 ± 6.1 | 0.3 ± 10.2 | 1.0 ± 7.0 | 1.0 ± 10.4 | − 0.7 ± 7.2 |
| CV | 18.4 | 12.7 | 26.0 | 14.5 | 26.2 | 15.1 |
| ICC | 0.814 | 0.867 | 0.636 | 0.849 | 0.658 | 0.838 |
| Mass index (g/m2) | ||||||
| Mean | 26.3 ± 6.0 | 72.9 ± 18.0 | 29.3 ± 6.7 | 75.4 ± 18.9 | 29.2 ± 6.5 | 71.6 ± 17.4 |
| Mean difference | − 4.3 ± 5.0 | − 7.8 ± 7.2 | −1.2 ± 6.2 | 2.6 ± 6.7 | − 1.5 ± 5.1 | − 5.1 ± 7.3 |
| CV | 18.9 | 9.9 | 21.2 | 8.8 | 17.5 | 10.2 |
| ICC | 0.540 | 0.848 | 0.638 | 0.932 | 0.713 | 0.881 |
Note. Obs1 = observer 1; Obs2 = observer 2; Obs3 = observer 3; RV = right ventricle; LV = left ventricle; EF = ejection fraction; EDV = end diastolic volume; ESV = end systolic volume; Stroke V = Stroke Volume; CV = coefficient of variation, expressed as a percentage; ICC = intraclass correlation coefficient.