Table 2.
Comparisons of swallowing kinematic parameters between the normal population and populations with aspiration and pyriform sinus stasis.
| Parameters | Groups | N | Mean | First quartile | Third quartile | 95% Confidence interval | p-value | |
|---|---|---|---|---|---|---|---|---|
| LL | UL | |||||||
| Anterior hyoid displacement (mm) | Normal group | 230 | 17.03 | 12.12 | 21.67 | 16.12 | 17.93 | 0.00 |
| Aspiration group | 87 | 11.51 | 7.37 | 14.8 | 10.09 | 12.94 | ||
| Stasis group | 132 | 12.98 | 8.72 | 16.99 | 11.85 | 14.11 | ||
| Superior hyoid displacement (mm) | Normal group | 230 | 20.63 | 13.3 | 26.96 | 19.19 | 22.07 | 0.426 |
| Aspiration group | 87 | 19.73 | 12.22 | 24.85 | 17.24 | 22.23 | ||
| Stasis group | 132 | 18.88 | 12.84 | 24.13 | 17.35 | 20.4 | ||
| Maximal hyoid displacement (mm) | Normal group | 230 | 29.85 | 21.26 | 33.09 | 27.47 | 32.25 | 0.00 |
| Aspiration group | 87 | 25.37 | 18.31 | 28.64 | 21.09 | 29.65 | ||
| Stasis group | 132 | 23.69 | 18.15 | 28.33 | 22.14 | 25.24 | ||
| Velocity of anterior hyoid displacement (mm/s) | Normal group | 230 | 19.18 | 7.78 | 25.47 | 17.18 | 21.19 | 0.00 |
| Aspiration group | 87 | 7.88 | 2.05 | 9.51 | 5.88 | 9.88 | ||
| Stasis group | 132 | 15.76 | 7.8 | 20.02 | 13.9 | 17.62 | ||
| Velocity of superior hyoid displacement (mm/s) | Normal group | 230 | 24.49 | 11.53 | 34.15 | 22.31 | 26.67 | 0.024 |
| Aspiration group | 87 | 16.32 | 5.91 | 22.67 | 13.48 | 19.17 | ||
| Stasis group | 132 | 24.86 | 13.06 | 34.04 | 22.15 | 27.56 | ||
| Average velocity of maximal hyoid displacement (mm/s) | Normal group | 230 | 28.27 | 14.73 | 40.41 | 27.01 | 29.53 | 0.00 |
| Aspiration group | 87 | 16.48 | 5.75 | 23.3 | 13.23 | 19.73 | ||
| Stasis group | 132 | 29.54 | 16.99 | 38.46 | 26.12 | 32.95 | ||