Table 1.

Data from patient records

A: Epidemiological characteristics of patients treated with VIM-DBS
	All (N = 46)
Sex M/F	32/14
Age at operation	65.2 (29.5-84.2)
Earlier unilateral DBS	2
Earlier thalamotomi	4
B: Stimulation parameters during long-term VIM-DBS treatment
Unilateral/bilateral	4/26
Voltage postoperative	2.3 (1.5–4)
Voltage follow-up	3.5 (2.1–4.4)
Puls width postoperative	90 (60–120)
Puls width follow-up	90 (60–120)
Frequency postoperative	148 (90–230)
Frequency follow-up	181 (120–230)

Data from patient records presented as median (range). Follow-up until 01.11.12 or death 1A. M: male, F: female. 1B. All: essential tremor patients.