Table 3 Comparison results of active contact coordinates in MNI space in different motor symptom improvement rate groups [M (IQR), mm]

Improvement rates < 25% group

5

−12.1 (1.9)

−14.0 (2.6)

−9.4 (1.0)

12.1 (1.9)

−14.7 (2.6)

−9.3 (1.5)

Improvement rates 25–50% group

11

−11.1 (1.9)

− 13.2 (2.6)

−8.1 (1.3)

11.3 (1.9)

− 13.5 (1.9)

−8.4 (2.1)

Improvement rates > 50% group

41

−11.6 (1.2)

− 13.4 (1.7)

−7.9 (1.1)

12.1 (1.6)

− 13.6 (2.2)

−7.8 (1.2)

Kruskal-Wallis χ²

2.366

0.461

7.036

1.200

2.261

7.455

P

0.306

0.794

0.030

0.549

0.323

0.024