Table 4 |
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|
Inter-observer and intra-observer variability in Doppler measurements |
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|
IVRT |
Vmax E |
Vmax A |
DTE |
Vmax S |
Vmax D |
Vmax E' septal |
Vmax E' lateral |
Vp |
|
|
|
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|
Inter-observera |
10% |
1% |
3% |
13% |
4% |
5% |
4% |
5% |
11% |
|
rb |
0.34 (-0.13 to +0.68) |
0.99 (0.98–1.0) |
0.98 (0.95–0.99) |
0.31 (-0.15 to +0.66) |
0.86 (0.63–0.95) |
0.87 (0.65–0.96) |
0.97 (0.91–0.99) |
0.93 (0.82–0.97) |
0.22 (-0.27 to +0.62) |
|
Intra-observera |
6% |
2% |
2% |
7% |
4% |
6% |
2% |
2% |
7% |
|
rb |
0.85 (0.65–0.94) |
0.98 (0.94–0.99) |
0.98 (0.95–0.99) |
0.72 (0.42–0.88) |
0.87 (0.67–0.95) |
0.74 (0.41–0.90) |
0.93 (0.83–0.97) |
0.95 (0.87–0.98) |
0.54 (0.12–0.80) |
|
|
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|
aMean percentage error. bIntraclass coefficient correlation (numbers in parentheses are 95% confidence intervals). IVRT, isovolumic relaxation time; Vmax, maximal velocity; DTE, E wave deceleration time; Vp, propagation velocity. |
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|
Vignon et al. Critical Care 2007 11:R43 doi:10.1186/cc5736 |
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