TABLE 1.
The results of the Mann–Whitney U‐test
| Translation shift | ||||
|---|---|---|---|---|
| Vertical | Longitudinal | Lateral | Three dimensional | |
| Lower vs. middle | 0.674 | 0.340 | 0.381 | 0.986 |
| Lower vs. upper | 0.882 | <0.001 | 0.217 | 0.975 |
| Middle vs. upper | 0.734 | 0.001 | 0.696 | 0.879 |
| Rotational shift | |||
|---|---|---|---|
| Yaw direction | Roll direction | Pitch direction | |
| Lower vs. middle | 0.979 | 0.815 | 0.208 |
| Lower vs. upper | 0.612 | 0.422 | 0.872 |
| Middle vs. upper | 0.561 | 0.676 | 0.297 |
Note: Significant differences were found only in the longitudinal direction between the upper and middle regions and between the upper and lower regions.