Table 3.
Inter-observer variability of three-dimensional echocardiography
| Variable | First observer (ml) | Second observer (ml) | Relative difference (%) | Group comparison (P-Values) | Correlation coefficient (R) |
|---|---|---|---|---|---|
| EDV | 25.64 | 28.61 | 10.94 | 0.160 | 0.71 |
| ESV | 13.38 | 15.20 | 12.74 | 0.027a | 0.83 |
| SV | 12.22 | 13.42 | 9.40 | 0.556 | 0.26 |
| EF | 48.47 | 47.99 | 1.00 | 0.695 | 0.58 |
Comparison of right ventricular function parameters measured with three-dimensional echocardiography by two different observers (end-diastolic volume = EDV, end-systolic volume = ESV, ejection fraction = EF, stroke volume = SV).
aSignificant differences (p < 0.05).