N Hjort, K Ostergard, E Dupont
Movement Disorders 2004; 2: 195-199

Sleep quality was assessed in 10 consecutive PD patients receiving bilateral STN DBS and 10 control patients on the waiting list for surgery. Control patients had roughly the same age but less disease duration compare to surgery patients. Sleep quality was assessed with the Parkinson’s Disease Sleep Scale, a 15-item scale in which patients rate their symptoms from 0
(worst) to 10 (best).
Mean total PDSS score before surgery was 79.8 in surgery patients and 87.4 in controls. Four months after surgery, surgery patients scored 105.3 (p

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