Fig. 2From: Criteria for identification of advanced Parkinson’s disease: the results of the Italian subgroup of OBSERVE-PD observational studyMean NMSS total (A), PDQ-8 (A), and NMSS subscores (B) in APD and non-APD patients. Figures reported the mean total score of NMSS (A), of PDQ-8 (A) and the subscore of the NMSS (B); p values from a paired t test indicate statistical significance; APD = Advanced Parkinsons’ Disease; non-APD = non- Advanced Parkinsons’ Disease; NMSS = Non-Motor Symptoms Scale; PDQ-8 = Parkinson’s Disease 8-item questionnaireBack to article page