TABLE V.
(A) The Top Ten Features and Their Relative Importance; (B) The Relative Importance of Each Metric; (C) The Relative Importance of Each Statistical Descriptor.
| A | ||
|---|---|---|
| Rank | Features | Importance Ranking |
| 1 | # of Non-"Step-out” Trials | 1.1 ± 0.5 |
| 2 | Min of RMS in Roll | 2.3 ± 0.7 |
| 3 | Trend of RMS | 7.9 ± 7.6 |
| 4 | Mean of Trial Length | 10.9 ± 11.3 |
| 5 | Trend of PZ | 12.2 ± 6.7 |
| 6 | Trend of Path Length | 12.8 ± 10.6 |
| 7 | Trend of Center of Sway in Pitch | 15.6 ± 5.3 |
| 8 | Trend of RMS in Roll | 17.3 ± 11.4 |
| 9 | Trend of EA | 18.7 ± 11.0 |
| 10 | Min of EA | 19.7 ± 12.9 |
| B | ||
| Rank | Metrics | Importance Ranking |
| 1 | RMS in Roll | 21.7±12.0 |
| 2 | PZ | 27.2±8.4 |
| 3 | Trail Length | 28.6±12.5 |
| 4 | Path Length | 31.0±11.5 |
| 5 | Center of Sway in Roll | 32.3±7.8 |
| 6 | EA | 33.5±11.9 |
| 7 | RMS in Pitch | 34.6±6.9 |
| 8 | Center of Sway in Pitch | 34.7±13.3 |
| 9 | RMS of trunk sway | 34.8±14.9 |
| 10 | RMS of Velocity | 36.6±6.8 |
| C | ||
| Rank | Statistical Descriptors | Importance Ranking |
| 1 | Trend | 19.4±7.7 |
| 2 | Min | 29.1±11.5 |
| 3 | Median | 31.8±6.8 |
| 4 | Standard Deviation | 33.6±8.4 |
| 5 | Max | 37.0±6.0 |
| 6 | Mean | 38.0±12.0 |