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Fig. 1 | Neurological Research and Practice

Fig. 1

From: Preoperative motor deficits and depressive symptoms predict quality of life in patients with Parkinson’s disease at different time points after surgery for subthalamic stimulation: a retrospective study

Fig. 1

Quality of life at baseline, 6 and 12 months follow-up. The quality of life, displayed as the average summary index (SI) of the Parkinson ‘s Disease Questionnaire 39 (PDQ-39) total and all eight subscales, improved significantly from baseline to 6 and 12 months. The total score slightly but significantly worsened from 6 to 12 months. * = p < 0.05, **p < 0.01, ***p < 0.001, PDQ-39 = Parkinson’s Disease Questionnaire 39

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