Skip to main content
. Author manuscript; available in PMC: 2016 Nov 9.
Published in final edited form as: Cortex. 2014 Sep 16;63:172–183. doi: 10.1016/j.cortex.2014.08.023

Table 2.

Neuropsychological background data for the two groups of PD patients and the HC group.

Pre-op (n = 21)
Post-op (n = 21)
HC (n = 21)
Stat. val. (F) df p-value
Mean ± SD Mean ± SD Mean ± SD
MMSE   29.0 ± 0.8
Mattis (of 144) 141.1 ± 2.3 139.9 ± 2.8 140.9 ± 2.0 1.43 2. 60 .25
Stroop Interference 3.8 ± 10.2 2.1 ± 8.6     6.8 ± 9.2 1.34 2. 60 .27
TMT A (seconds) 42.5 ± 13.9 50.0 ± 20.6   42.7 ± 15.1 1.35 2. 60 .27
B (seconds) 95.5 ± 44.7 109.7 ± 49.3   91.5 ± 42.7 <1 2. 60 .40
B-A (seconds) 52.9 ± 37.0 59.7 ± 39.9   48.8 ± 34.9 <1 2. 60 .64
Verbal fluency Categorical 34.8 ± 9.4 29.0 ± 12.3   32.0 ± 9.0 1.61 2. 60 .21
Phonemic 24.7 ± 7.2 21.0 ± 7.4   20.8 ± 6.1 2.12 2. 60 .13
Action verbs 16.7 ± 5.8 14.9 ± 5.3   17.8 ± 6.5 1.31 2. 60 .28
MCST Categories 5.5 ± 0.8 5.6 ± 0.7     5.9 ± 0.2 1.90 2. 60 .16
Errors 4.4 ± 4.5 2.9 ± 3.9     2.3 ± 1.9 1.80 2. 60 .17
Perseverations 1.0 ± 1.6 1.6 ± 3.0     0.4 ± 0.6 1.70 2. 60 .19
MADRS 5.7 ± 8.1 5.6 ± 4.9     1.6 ± 2.06 3.48 2.60 .03*

Statistical values (stat. val.), degrees of freedom (df), and p-values between preoperative (pre-op), post-operative (post-op), and HC (healthy control) groups are reported (single-factor analysis of variance).

PD = Parkinson’s disease; MMSE = Mini Mental State Examination; TMT = Trail Making Test; MCST = modified version of the Wisconsin Card Sorting Test; MADRS = Montgomery-Asberg Depression Rating Scale.

*

Significant if p-value <.05.