Variables PD with pRBD (n=13) PD with confirmed RBD on PSG (n=7) PD non-RBD (n=16)
Age, years 65.5 64 64.6
Females, n (%) 5 (38.5) 3 (42.9) 7 (43.8)
Disease duration, years 2.2 (1-5) 2.2 (1-5) 2.9 (0.5-6)
MMSE score 28.9 (26-30) 29 (26-30) 29 (26-30)
UPDRS part III motor subscale score 11.8 (6-26) 10.1 (6-17) 14.7 (3-31)
Hoehn and Yahr stage (1/1.5/2/2.5), n 5/4/3/1 2/2/2/1 5/3/4/4
GDS stage 1/2/3, n 7/3/2003 3/1/2003 8/3/2005
MCI n % 3 (23.1) 3(42.9) 5(31.3)
Education, years 12.3 (7-18) 11.7 (6-17) 12.7 (8-19)
NMSS 9.7 (4-7) 10.4 (6-17) 7.1*(4-18)
Geriatric depression scale 1.6 (0-4) 1.1 (0-3) 1.1 (0-3)
L Dopa Equivalent Dosage 287.5 (100-662) 369.6 (100-662) 403 (100-662)
Table 1: Baseline characteristics, Numbers represent mean (range) or number of patients (%), *p<05 (pRBD vs non-RBD), t-test, PSG: Polysomnography, MMSE: Mini-mental state examination, GDS: Global deterioration scale 1 (normal), 2 (Subjective cognitive impairment) and 3 (mild cognitive impairment), NMSS: Non-motor symptom scale. Standardized rating scales of motor function [9] (UPDRS part III, motor sub-scale) and Hoehn and Yahr staging [10] were performed by trained research physicians. Drug use was recorded, and L-DOPA equivalents calculated [11].
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