Table 4.
Summary of results of Bland-Altman analyses
| Comparison | Net Flow [ml/cycle] | Peak Flow [ml/s] | Peak Velocity [cm/s] | |||
|---|---|---|---|---|---|---|
| MD ± SD | CI of the MD | MD ± SD | CI of the MD | MD ± SD | CI of the MD | |
| Intertechnique | ||||||
| S2 vs. CS4 | 1.3 ± 8.0 | (− 0.4; 2.9) | 2.7 ± 20.4 | (− 1.5; 6.9) | − 4.8 ± 8.1 | (− 8.8; 0.7) |
| S2 vs. CS6 | 1.3 ± 7.1 | (− 0.2; 2.7) | 3.1 ± 22.3 | (− 1.5; 7.7) | − 6.3 ± 12.0 | (− 12.4; 0.3) |
| S2 vs. CS8 | 2.2 ± 7.8 | (0.6; 3.8) | 4.6 ± 25.2 | (− 0.6; 9.9) | −7.9 ± 13.0 | (− 14.4; − 1.3) |
| S2 vs. CS10 | 5.4 ± 8.0 | (3.7; 7.0) | 14.4 ± 28.3 | (8.6; 20.3) | − 4.0 ± 12.2 | (− 10.2; 2.2) |
| Inter-Observera | ||||||
| S2_1 vs. S2_2 | −1.3 ± 2.6 | (− 2.2; − 0.3) | −1.1 ± 6.7 | (− 3.5; 1.3) | ||
| CS6_1 vs. CS6_2 | −0.4 ± 2.8 | (− 1.4; 0.7) | 2.1 ± 9.5 | (−1.3; 5.5) | ||
| Intra-Observera | ||||||
| S2_1 vs. S2_2 | −0.4 ± 1.9 | (−1.1; 0.2) | −0.7 ± 8.1 | (− 3.6; 2.2) | ||
| CS6_1 vs. CS6_2 | −0.2 ± 2.3 | (− 1.1; 0.6) | − 2.1 ± 10.7 | (− 6.0; 1.7) | ||
| Scan-Rescanb | ||||||
| S2_1 vs. S2_2 | − 0.7 ± 4.9 | (− 2.4; 1.1) | 1.9 ± 26.3 | (− 7.5; 11.3) | 5.1 ± 4.9 | (0.9; 9.4) |
| CS6_1 vs. CS6_2 | − 0.2 ± 8.5 | (−3.2; 2.9) | 4.8 ± 32.1 | (− 6.7; 16.2) | 2.1 ± 11.6 | (− 8.0; 12.3) |
| CS8_1 vs. CS8_2 | − 1.5 ± 8.9 | (−4.7; 1.7) | 6.9 ± 42.5 | (− 8.3; 22.1) | 14.8 ± 38.2 | (− 18.7; 48.3) |
Data are given as mean difference (MD) ± standard deviation (SD) and 95% confidence interval (CI) of the mean differences. The main data sample considers 6 contours from each of in total 15 subjects. a Results for inter- and intraobserver analysis were only extracted from AAo and DAo1. b Scan-rescan measurements were performed in 5 volunteers