Table 3.
Pearson product moment coefficient matrix between composite PPA score, PPA key components, Trail Making Test (Part B), Verbal Digit Span Backward Test, and Stroop Colour-Word Test (N = 158).
| Variable | Trail Making Test (Part B) (s) | Verbal Digit Span Backward Test (max. 14 pts) | Stroop Colour-Word Test (s) | 
|---|---|---|---|
| Composite PPA Score | 0.37 ** | − 0.36 ** | 0.23 ** | 
| Postural Sway(mm) | 0.15 | − 0.13 | 0.11 | 
| Quadriceps Strength (kg) | − 0.14 | 0.08 | − 0.08 | 
| Hand Reaction Time (s) | 0.19 * | − 0.12 | 0.28 ** | 
| Proprioception (deg) | 0.08 | 0.13 | − 0.003 | 
| Edge Contrast Sensitivity (dB) | − 0.08 | 0.06 | 0.04 | 
P < 0.05
P < 0.01.