Table 4.

Summary of t-test of baseline responders to DBS at 1 year follow up.

Test	Mean	SD	T	p
Finger Tap Dominant Hand
Responder	50.1	6.8	-2.5	0.03
Non-Responder	39.3	12.2
Finger Tap Non-Dominant Hand
Responder	44.2	4.0	Z = -2.6	0.007
Non-Responder	34.9	8.9	Non-Parametric (Mann–Whitney U)
WCST Total Errors
Responder	52.0	12.4	-2.1	0.048
Non-Responder	41.3	8.9