Table 1 Intra-observer, inter-experiment and inter-observer variability analysis.
Intraobserver variability | LV mass | EDV | ESV | SV | EF |
|---|---|---|---|---|---|
Mean ± SD data 1 | 93,00 ± 8,018 | 76,57 ± 6,629 | 42,14 ± 8,606 | 34,29 ± 2,792 | 47,86 ± 6,674 |
Mean ± SD data 2 | 93,71 ± 7,643 | 76,86 ± 6,857 | 40,00 ± 10,04 | 37,14 ± 3,744 | 52,43 ± 8,569 |
Bias | -0,7143 | -0,2857 | 2,143 | -2,8571 | -4,5714 |
Limits of agreement | -12,62 to 11,19 | -3,990 to 3,418 | -11,55 to 15,84 | -15,43 to 9,715 | -23,23 to 14,09 |
SDD | 6,07 | 1,89 | 6,99 | 6,41 | 9,52 |
Coefficient of variability | 6,51% | 2,46% | 1,70% | 17,96% | 18,98% |
r square | 0,92 | 0,99 | 0,92 | 0,58 | 0,84 |
Interexperiment variability | LV mass | EDV | ESV | SV | EF |
Mean ± SD data 1 | 93,00 ± 8,018 | 76,57 ± 6,629 | 42,14 ± 8,606 | 34,29 ± 2,792 | 47,86 ± 6,674 |
Mean ± SD data 3 | 96,43 ± 7,970 | 73,14 ± 7,557 | 41,29 ± 9,526 | 31,71 ± 3,834 | 47,14 ± 7,658 |
Bias | -3,429 | 3,429 | 0,8571 | 2,571 | 0,7143 |
Limits of agreement | -20,70 to 13,84 | -13,46 to 20,32 | -13,25 to 14,96 | -8,450 to 13,59 | -12,80 to 14,23 |
SDD | 8,81 | 8,619 | 7,198 | 5,623 | 6,897 |
Coefficient of variability | 9,64% | 12% | 17,25% | 17,04% | 14,52% |
r square | 0,83 | 0,81 | 0,92 | 0,71 | 0,89 |
Interobserver variability | LV mass | EDV | ESV | SV | EF |
Mean ± SD data 2 | 93,71 ± 7,643 | 76,86 ± 6,857 | 40,00 ± 10,04 | 37,14 ± 3,744 | 52,43 ± 8,569 |
Mean ± SD data 4 | 95,14 ± 8,379 | 67,57 ± 7,593 | 34,29 ± 7,296 | 33,57 ± 1,360 | 52,71 ± 5,384 |
Bias | -1,43 | 9,29 | 5,71 | 3,57 | -0,29 |
Limits of agreement | -12,57 to 9,71 | -1,43 to 20,00 | -10,59 to 22,02 | -18,22 to 25,36 | -22,16 to 21,59 |
SDD | 5,48 | 5,47 | 8,32 | 11,12 | 11,16 |
Coefficient of variability | 6,02% | 8% | 22,40% | 31,45% | 21,23% |
r square | 0,94 | 0,93 | 0,97 | 0,03 | 0,84 |