Figure 5.

Clinical outcomes do not differ significantly between bipolar and monopolar DBS in a sample of consecutive patients who underwent unilateral subthalamic stimulation for PD. There was no statistically significant difference in postoperative outcome between monopolar and bipolar stimulation modes measured by the UPDRS Parts 2 and 3 off medications, Part 4, and the time to stand from the seated position. There was a borderline significant improvement in the number of steps walked comfortably favoring bipolar over monopolar stimulation (P = 0.04). Data presented as means ± standard deviation. IQR, interquartile range; ADLs, activities of daily living.