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Table 1.

Demographic and clinical characteristics of patients included in the study.

Subject	Gender	Age	Handedness	Education (yr)	Duration of disease (yr)	Hoehn and Yahrstage^a	UPDRS speech score^b (off medication)	UPDRS score total (off medication)
1	Male	68	Left	16	8	2	1	50
2	Male	82	Right	16	8	2	2	36
3	Female	71	Right	16	8	2	1	24
4	Male	60	Right	13	6	2	1	39
Mean ± SE	–	70.25 ± 3.94	–	15.25 ± 0.65	7.50 ± 0.43	2.00 ± 0.00	1.25 ± 0.22	37.25 ± 4.63

Subject	Gender	Age	Handedness	Education (yr)	Duration of disease (yr)	Hoehn and Yahrstage^a	UPDRS speech score^b (off medication)	UPDRS score total (off medication)
1	Male	68	Left	16	8	2	1	50
2	Male	82	Right	16	8	2	2	36
3	Female	71	Right	16	8	2	1	24
4	Male	60	Right	13	6	2	1	39
Mean ± SE	–	70.25 ± 3.94	–	15.25 ± 0.65	7.50 ± 0.43	2.00 ± 0.00	1.25 ± 0.22	37.25 ± 4.63

Note. UPDRS = Unified Parkinson’s Disease Rating Scale.

^a

Goetz et al. (2004).

^b

Goetz et al. (2007).