Table 1.
Distances covered and symmetry ratios (first analysis of the first video, mean of 3 raters, and 10 patients).
| Muscles | Side | Mean distance (cm) | Standard deviation (cm) | 20% distance (cm) | Minimum (cm) | Maximum (cm) | Symmetry ratio (%) |
|---|---|---|---|---|---|---|---|
| Frontalis | R L |
1.32 1.36 |
0.26 0.28 |
0.26 0.27 |
0.59 0.66 |
1.77 1.87 |
97 |
|
| |||||||
| Orbicularis oculi | R L |
0.42 0.40 |
0.16 0.14 |
0.08 0.08 |
0.07 0.13 |
0.70 0.64 |
95 |
|
| |||||||
| Corrugator | R L |
1.07 1.08 |
0.15 0.15 |
0.21 0.22 |
0.80 0.80 |
1.32 1.36 |
99 |
|
| |||||||
| Zygomaticus | R L |
0.88 0.73 |
0.17 0.17 |
0.18 0.15 |
0.57 0.49 |
1.23 1.10 |
83 |
|
| |||||||
| Orbicularis oris | R L |
0.56 0.48 |
0.21 0.25 |
0.11 0.10 |
0.14 0.08 |
1.04 1.25 |
86 |
|
| |||||||
| Buccinator | R L |
0.70 0.87 |
0.29 0.29 |
0.14 0.17 |
0.25 0.32 |
1.26 1.53 |
80 |
Each number in Column 3 indicates the mean distance covered during displacement due to maximal contraction of the muscle indicated in Column 1. R: right; L: left. Note that the 20% difference selected to represent disagreement is lower than or equal to the standard deviation for all muscles except for corrugator.