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Table 4 Comparison results of active contact coordinates in AC-PC space in different motor symptom improvement rate groups [M (IQR), mm]

From: Relationship between electrode position of deep brain stimulation and motor symptoms of Parkinson’s disease

Group Number of cases Left Right
X Y Z X Y Z
Improvement rates < 25% group 5 −10.8 (1.6) −1.7 (3.2) −4.5 (0.4) 11.5 (1.6) −1.9 (2.0) −4.8 (1.2)
Improvement rates 25–50% group 11 −11.7 (3.2) − 1.5 (2.5) − 4.3 (1.9) 11.6 (2.4) −1.9 (1.2) − 4.3 (1.5)
Improvement rates > 50% group 41 −11.7 (2.1) − 1.8 (1.6) −3.7 (1.6) 12.3 (1.8) − 1.7 (2.1) − 3.8 (1.2)
Kruskal-Wallis χ2   1.888 0.529 1.970 1.039 0.194 3.847
P   0.389 0.768 0.373 0.595 0.908 0.146