Table 1

Preoperative demographic and neurological data of the patients with Parkinson’s disease (PD)

Patient No	Sex	Age (y)	Education (y)	Estimated IQ	Age of Disease Onset	PD Duration (y)	Most affected side	Levodopa dosage mg/day	Years of levodopa treatment	Other Medication
1	M	39	15	109	15	24	Right	500	9	P
2	M	60	9	86	56	5	Right	400	5	B
3	M	38	8	81	30	8	Right	425	8	B
4	F	58	10	89	48	10	Right	1200	3	B
5	M	44	12	109	32	12	Left	1100	8	B/AC
6	M	49	13	116	40	10	Right	650	10	B/P
7	M	44	12	111	39	6	Left	675	5	B/AC
8	M	67	12	99	53	15	Right	1000	15	B/P/AD
9	M	67	10	95	58	9	Right	1050	9	B/P
10	M	45	11	105	38	6	Left	800	6	B
11	M	70	16	115	55	16	Right	850	16	B
12	F	47	16	115	37	10	Left	700	7	P
13	F	57	10	104	52	5	Left	875	5	P
14	M	62	12	93	58	4	Right	1200	4	P
15	M	57	10	104	47	10	Right	925	7	B
16	M	60	10	85	52	9	Right	800	9	B
17	F	46	10	104	43	3	Left	300	3	B/P
18	M	62	8	102	42	20	Right	550	20	B/P/AC
19	F	62	11	78	54	9	Left	800	9	P
20	M	64	12	76	64	1	Right	300	1	—
Mean		55	11	99	45	9.6		755	8.0
SD		9.9	2.3	12.7	11.6	5.7		280	4.7

B=Bromocriptine; P=pergolide; AC=anticholinergic drugs; AD=antidepressant drugs.