Table 4.
The testing accuracy for the diagnosis of young, old subjects, and PD patients
| Single features | Stride interval | L–Z | Refined L–Z | HE | CD | LLE |
|---|---|---|---|---|---|---|
| Accuracy (Sd) % | 62.61 (9.47) | 73.50 (8.14) | 73.68 (7.54) | 57.24 (14.7) | 43.67 (12.03) | 55.17 (12.20) |
| Combined features | Stride interval + HE | Stride interval + CD | Stride interval + LLE | Stride interval + L–Z | Stride interval + refined L–Z |
|---|---|---|---|---|---|
| Accuracy (Sd) % | 68.27 (12.17) | 74.94 (11.22) | 73.56 (11.61) | 83.66 (7.62) | 85.30 (7.22) |
CD Correlation dimension, HE Hurst exponent, LLE Largest Lyapunov exponent