Table 1.
Features selection: independent sample t-test. We performed an independent sample t-test to analyze which features showed significant differences, regardless of gait speed: pwPD, persons with Parkinson’s disease; HR, harmonic ratio; RQArec, %recurrency in the recurrence quantification analysis; RQAdet, % determinism in the recurrence quantification analysis; CV, coefficient of variation of the step length.
| pwPD | Hsmatched | p | Cohen’s d | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| Gait speed (m/s) | 0.76 | 0.21 | 0.81 | 0.22 | 0.171 | 0.233 |
| Stance phase (%) | 60.84 | 2.13 | 62.19 | 3.17 | 0.004 | 0.498 |
| Swing phase (%) | 39.12 | 2.14 | 37.93 | 3.21 | 0.011 | 0.438 |
| Double support (%) | 10.86 | 2.13 | 12.09 | 3.17 | 0.008 | 0.453 |
| Single support (%) | 39.09 | 2.13 | 37.84 | 3.19 | 0.008 | 0.457 |
| Cadence (steps/min) | 104.06 | 18.10 | 88.31 | 13.23 | <0.001 | 0.994 |
| Stride time (s) | 1.22 | 0.18 | 1.37 | 0.18 | <0.001 | 0.839 |
| Stride length (m) | 0.91 | 0.19 | 1.05 | 0.17 | <0.001 | 0.783 |
| % stride length (% height) | 57.35 | 22.08 | 62.79 | 11.67 | 0.148 | 0.288 |
| Pelvic tilt (°) | 3.46 | 1.45 | 2.74 | 0.71 | <0.001 | 0.624 |
| Pelvic obliquity (°) | 4.04 | 1.88 | 4.01 | 1.53 | 0.923 | 0.017 |
| Pelvic rotation (°) | 5.26 | 2.98 | 6.53 | 3.57 | 0.025 | 0.383 |
| HRap | 1.64 | 0.30 | 2.07 | 0.54 | <0.001 | 0.973 |
| HRml | 1.60 | 0.27 | 1.96 | 0.42 | <0.001 | 0.996 |
| HRv | 1.64 | 0.30 | 2.09 | 0.54 | <0.001 | 1.008 |
| RQArec_ap | 21.09 | 17.85 | 4.93 | 3.80 | <0.001 | 1.257 |
| RQArec_ml | 15.53 | 14.03 | 4.35 | 5.01 | <0.001 | 1.064 |
| RQArec_v | 37.17 | 193.60 | 3.13 | 3.22 | 0.144 | 0.250 |
| RQAdet_ap | 70.29 | 31.20 | 38.40 | 27.46 | <0.001 | 1.086 |
| RQAdet_ml | 67.45 | 33.37 | 36.61 | 26.26 | <0.001 | 1.028 |
| RQAdet_v | 69.02 | 29.39 | 23.54 | 18.89 | <0.001 | 1.843 |
| CV | 39.04 | 19.65 | 26.90 | 10.91 | <0.001 | 0.765 |