Table 1.

Sample characteristics

	Mean	Median	SD	Range
Age, years	67.81	69	10.82	35 to 92
Years of education	11.70	12	5.51	0 to 35a
Age at onset of PD	58.21	59	11.43	20 to 91
Age at diagnosis	59.59	60	11.14	24 to 92
Age at starting treatment	59.85	61	11.07	28 to 92
Disease duration	9.60	9	6.06	0 to 35
Treatment duration	7.97	7	5.78	0 to 32
LEDD	858.76	800	431.39	0 to 2,250
SCOPA‐Motor Total score	23.70	22	13.13	1 to 61
Non‐Motor Symptoms Scale Total score	52.01	38	44.45	0 to 222
Clinical Impression of Severity Index for PD	8.73	8	4.89	0 to 24
Visual Analogue Scale for Pain	15.56	4	21.97	0 to 100
HADS‐Depression	6.83	6	4.72	0 to 19
HADS‐Anxiety	6.31	6	4.13	0 to 19
SCOPA‐Sleep Nocturnal sleep	4.91	4	3.63	0 to 15
SCOPA‐Sleep Daytime sleepiness	4.30	3	3.85	0 to 18

^a Three patients did not have formal education, but completed programs for late literacy. On the other extreme, 2 patients were university professors with extended continuous education.