. Author manuscript; available in PMC: 2011 Feb 28.

Published in final edited form as: Clin Neuropsychol. 2008 Sep 23;23(3):385–405. doi: 10.1080/13854040802360582

Table 4.

T-scores on specific cognitive tests at times 1 and 2

	Controls	DBS	t	df	p
Vocabulary
Time 1	58.0 (7.9)	55.5 (6.7)	1.06	39	.29
Time 2	57.1 (13.1)	54.4 (8.0)	0.79	37	.43
BNT
Time 1	55.5 (10.8)	53.6 (11.1)	0.55	39	.59
Time 2	55.8 (11.9)	53.7 (12.7)	0.53	38	.60
Digit Span Backward
Time 1	51.9 (13.5)	51.5 (7.6)	0.10	39	.92
Time 2	50.1 (8.6)	49.7 (6.0)	0.18	39	.86
COWAT
Time 1	48.4 (10.4)	47.5 (12.9)	0.26	39	.80
Time 2	50.5 (11.7)	41.7 (12.8)	2.28	39	.03
Animal Fluency
Time 1	47.7 (11.0)	52.5 (12.3)	−1.32	39	.19
Time 2	48.4 (12.7)	44.0 (14.7)	1.03	39	.31

DBS=Deep Brain Stimulation; BNT=Boston Naming Test; COWAT=Controlled Oral Word Association Test; T-scores: Mean=50; Standard Deviation=10.