Table 2.

Cognitive comparisons among the VH and NVH groups

Neuropsychological parameter	VH group (n = 10)	NVH group (n = 12)	t-test for unpaired samples P
MMSE	27.4 ± 1.6	27.8 ± 1.9	NS
WCST—global score	109 ± 24	91 ± 47	NS
Phonological fluency	22 ± 8	33 ± 14	0.04
ROCF—copy task	20 ± 12	28 ± 7	NS
Stroop test	8 ± 8	10 ± 8	NS
CDT	5 ± 3	8 ± 2	0.02
Attentive matrices	37 ± 10	47 ± 11	0.03
Immediate recall	31 ± 11	40 ± 16	NS
Delayed recall	6 ± 3	8 ± 4	NS

WCST, Wisconsin Card Sorting Test; ROCF, Rey–Osterrieth Complex Figure Test; CDT, clock drawing test; NS, non-significant P-value. Significance level was set at P < 0.05.