. Author manuscript; available in PMC: 2014 Dec 5.

Published in final edited form as: J Parkinsons Dis. 2014 Jan 1;4(4):579–583. doi: 10.3233/JPD-140388

Table 1.

Demographic characteristics

	Controls	DBS-DA	DBS+DA	t statistic χ² or F- statistic	p-value
Participants (no.)	17	13	14
Gender (male)	14	12	11	χ² =1.0	0.6
Age (years)	59.9±10.4	60.0±7.2	55.9±10.0	F=0.8	0.4
Age PD of diagnosis		46.1±7.5	40.1±8.1	t=1.8	0.08
PD Disease duration (years)		13.3±4.8	15.0±4.9	t=0.9	0.37
DBS (years)		3.6±2.4	3.9±2.3	t=0.3	0.7
LEU dose(mg/day) L-dopa (mg/day)		613.3±379.0 558.6±308.4	794.3±292.2 600.0±327.5	t=1.8 t=0.3	0.085 0.7
UPDRS on		16.5±1.2	15.2±1.2	t=1.1	0.2

UPDRS = Unified Parkinson’s Disease Rating Scale; LEU = L-dopa equivalent units;

All values are mean ± SD.

Parkinson’s disease patients who underwent deep brain stimulation and were treated with (DBS+DA) and without a dopamine agonist (DBS-DA).