Table 2.
Correlation coefficients between white matter changes, and gait and executive function parameters, sorted by groups.
| Spearman's ρ yPn (1) | Spearman's ρ yPD (2) | Spearman's ρ oPn (3) | Spearman's ρ oPD (4) | |
|---|---|---|---|---|
| N | 65 | 22 | 36 | 15 |
| TMT-A [s] | 0.19 | 0.58**,3,4 | 0.07 | −0.48 |
| TMT-B [s] | 0.33* | 0.37 | 0.29 | −0.11 |
| ST walking [m/s] | 0.05 | −0.61**,1 | −0.31 | −0.11 |
| ST subtracting serial 7s [N/s] | 0.03 | −0.19 | −0.40*,1 | 0.19 |
| DT walking while subtracting serial 7s [m/s] | −0.05 | −0.02 | −0.20 | 0.27 |
| DT subtracting serial 7s while walking [N/s] | 0.08 | −0.37 | −0.22 | 0.39 |
| DTC walking while subtracting serial 7s [%] | 0.14 | −0.32 | 0.02 | −0.63*,1,3 |
| DTC subtracting serial 7s while walking [%] | 0.01 | 0.05 | −0.33 | −0.56*,1 |
White matter changes were rated with Fazekas score. Correlation coefficients were calculated with Spearman's rank correlation.
*
p < 0.05;
**
p < 0.01.
Significant (p < 0.05) group differences in correlations between groups are indicated in bold and by the group number (1–4).
DT, dual task; DTC, dual task costs; N, number; oPD, old patients with Parkinson's disease (PD); oPn, old persons without PD; ST, single task; TMT-A, Trail Making Test part A; TMT-B, Trail Making Test part B; yPD, young patients with PD; yPn, young persons without PD.