Table 5 Principal component analysis of the placement variations of the transducer arrays: Placement variations along the principal components. Kolmogorov-Smirnov test: Test for comparison of the placement deviations from the overall mean per patient with a normal distribution
Array | First principal component | Second principal component | Third principal component | |||
|---|---|---|---|---|---|---|
Standard deviation [cm] | p-value Kolmogorov-Smirnov test | Standard deviation [cm] | p-value Kolmogorov-Smirnov test | Standard deviation [cm] | p-value Kolmogorov-Smirnov test | |
frontal | 1.06 | < 0.01 | 0.70 | < 0.01 | 0.31 | < 0.01 |
occipital | 1.23 | 0.01 | 0.71 | < 0.01 | 0.25 | < 0.01 |
left | 0.96 | > 0.15 | 0.79 | > 0.15 | 0.28 | < 0.01 |
right | 1.11 | > 0.15 | 0.68 | 0.02 | 0.25 | > 0.15 |