Table 3.

Improvement rate at the 2-year follow-up in 352 patients.

	Preoperative baseline(med-off)	Postoperative baseline (med-off, IPG-off)	3 months(med-off, IPG-on)	6 months (IPG-on, med-off)	1 year(IPG-on, med-off)	2 years(IPG-on, med-off)
ICH group (n = 10)	60.73 ± 16.95	50.18 ± 13.41	26.91 ± 9.33	26.36 ± 7.30	27.73 ± 9.55	29.64 ± 8.99
Non-ICH group (n = 337)	55.45 ± 15.81	54.64 ± 14.28	26.23 ± 9.01	25.40 ± 7.91	25.13 ± 7.85	27.18 ± 7.33
P value	0.518	0.367	0.588	0.528	0.243	0.162

med-off: no drug use; IPG-off/on: implantable pulse generator off/on; ICH: intracranial hemorrhage.