Table 1.

Baseline demographic and clinical characteristics of participants

	Group, mean ± SD*
Characteristic	DBS, n = 16	Control, n = 14	Statistic	p value
Age, yr	42.56 ± 11.4	38.00 ± 9.8	t = 1.18	0.25
Sex, male:female	9:7	5:9	χ2 = 1.27	0.26
DART-IQ	92.4 ± 9.2	94.4 ± 9.0	t = −0.62	0.54
Age at onset, yr	14.2 ± 7.4	16.3 ± 6.8	t = −0.81	0.43
Duration of illness, yr	29.0 ± 12.5	23.7 ± 8.4	t = 1.37	0.18
Y-BOCS score	33.7 ± 3.6	32.4 ± 4.6	t = 0.87	0.40
HAM-A score	20.9 ± 5.9	20.21 ± 8.3	t = 0.25	0.80
HAM-D score	19.5 ± 6.7	17.6 ± 8.3	t = 0.70	0.49

DART-IQ = Dutch Adult Reading Test Intelligence Quotient; DBS = deep brain stimulation; HAM-A = Hamilton Anxiety Rating Scale; HAM-D = Hamilton Rating Scale for Depression; SD = standard deviation; Y-BOCS = Yale–Brown Obsessive Compulsive Scale.

^*Unless otherwise indicated.