Table 1.

Clinical details. UPDRS = Part III motor score of the United Parkinson's Disease Rating Scale. The first symptoms for patients 8 and 12 were not available.

Case	Age	Disease Duration	UPDRS Off (III)	UPDRS On (III)	First symptom	Reasons for surgery	Daily medication (mg/d)
1	58	10	42	20	Leg cramp	Tremor	Trihexyphenidyl 3 Levodopa 600 Rasagiline 1 Amantadine 100
2	62	10	20	8	Left side tremor & bradykinesia	On/off fluctuations, tremor & impulse control disorder	Levodopa 1000 Trihexyphenidyl 6
3	61	4	37	15	Left side tremor	Tremor	Amantadine 200 Levodopa 750 Entacapone 1000
4	65	15	51	21	Left hand tremor	Freezing	Amantadine 200 Levodopa 400 Ropinirole 12
5	44	10	33	7	Left hand tremor	Motor fluctuations, dyskinesia	Amantadine 200 Ropinirole 24 Rasagiline 1 Levodopa 600 Apomorphine 4.5 mg/h
6	42	9	60	42	Loss of dexterity	Bradykinesia, dystonia, freezing	Amantadine 400 Levodopa 600
7	51	9	56	12	Tremor	Motor fluctuations, dyskinesia	Apomorphine 4 Levodopa 1500 Entacapone 600
8	43	10	36	6		Motor fluctuations	Levodopa 600 Ropinirole 2
9	59	16	54	9	Loss of dexterity	Dyskinesia, painful cramps	Levodopa 100 Apomorphine 5 mg/h Rotigotine 4
10	69	10	34	12	Shuffling gait	Motor fluctuations, bradykinesia	Levodopa 800 Amantadine 100
11	53	7	25	5	Loss of dexterity	Dyskinesia, bradykinesia	Levodopa 800 Entacapone 800 Rasagiline 1
12	67	12	25	9		Off periods, & dyskinesia	Levodopa 950 Amantadine 100 Pramipexole 2.25
13	63	13	32	18	Dragging of left leg	Stiffness	Levodopa 700 Entacapone 1000 Ropinirole 8 Quetiapine 25 Clonazepam 0.5