Table 6.
Comparing errors between true pressures obtained with Millar catheter and the pressures obtained with SHAPE data using cross-validation approach
| Incident Acoustic Power (%) | Using data from MIP image (SHMIP) SHAPE vs. catheter pressures
|
Using data from from mean signal of all frames (SHAll_Frames) SHAPE vs. catheter pressures
|
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|---|---|---|---|---|---|---|
| Mean Difference (mmHg) | 95 % Confidence Interval of Difference (mmHg) | p-value | Mean Difference (mmHg) | 95 % Confidence Interval of Difference (mmHg) | p-value | |
| a) For all data
| ||||||
| 20 | -0.03 | -3.0 to 3.0 | 0.982 | -0.15 | -3.4 to 3.1 | 0.924 |
| 40 | 0.08 | -2.7 to 2.9 | 0.951 | -0.09 | -3.3 to 3.1 | 0.952 |
|
| ||||||
| b) For baseline data only (before PH)
| ||||||
| 20 | 3.47 | -0.1 to 7.0 | 0.053 | 3.50 | -0.9 to 7.9 | 0.110 |
| 40 | 3.23 | -0.3 to 6.8 | 0.070 | 3.64 | -0.9 to 8.2 | 0.103 |
|
| ||||||
| c) For PH data only
| ||||||
| 20 | -3.5 | -8.0 to 0.9 | 0.109 | -3.8 | -8.0 to 0.4 | 0.072 |
| 40 | -3.1 | -7.0 to 0.9 | 0.113 | -3.8 | -7.9 to 0.2 | 0.062 |