Table 3.

Neuropsychological test results for the HCV and control groups

Neuropsychological test	Group	Mean	SD	p Value	Test
MMSE	Control	28.0	1.7	0.407	Mann–Whitney
	HCV	27.4	2.2
Simple Drawing Test
Incidental memory	Control	5.9	1.2	0.227	Mann–Whitney
	HCV	6.3	1.4
Immediate memory	Control	8.7	0.8	0.464	Mann–Whitney
	HCV	8.8	1.1
Later memory	Control	8.9	1.0	0.385	Mann–Whitney
	HCV	9.1	1.0
Clock Drawing Test	Control	4.7	0.8	0.288	Mann–Whitney
	HCV	4.2	1.4
Random Letters Test	Control	0.48	0.74	0.510	Mann–Whitney
	HCV	0.55	0.69
Stroop Test
Part 1	Control	116.1	20.3	0.92	Student t
	HCV	116.7	28.9
Part 2	Control	250.1	45.4	0.70	Student t
	HCV	245.3	49.5
Part 2–1	Control	137.5	44.9	0.48	Student t
	HCV	128.7	50.5
Trail-Making Test
Part A	Control	46.3	17.3	0.109	Mann–Whitney
	HCV	53.7	20.7
Part B	Control	135.7	74.7	0.586	Mann–Whitney
	HCV	150.96	85.01
B/A	Control	2.91	1.31	0.565	Mann–Whitney
	HCV	2.82	1.30
Boston Naming Test	Control	13.9	1.2	0.504	Mann–Whitney
	HCV	14.0	1.3
Verbal Fluency Test	Control	19.1	5.0	0.66	Student t
	HCV	18.6	5.1
Digit Span Test
Direct order	Control	8.0	1.8	0.886	Mann–Whitney
	HCV	7.9	1.7
Reverse order	Control	4.3	1.9	0.389	Mann–Whitney
	HCV	4.6	2.0
Geometric Shapes Drawing Test	Control	1.1	1.0		Mann–Whitney
	HCV	1.3	0.9	0.217
Symbol Search Test
Correct items	Control	25.4	8.0	0.52	Student t
	HCV	24.1	8.1
Incorrect items	Control	2.6	2.3	0.770	Mann–Whitney
	HCV	2.9	3.3
Total	Control	22. 9	8.5	0.47	Student t
	HCV	21.2	9.0
Similarities Test	Control	18.9	6.4	0.39	Student t
	HCV	17.2	8.1
Rey Auditory Verbal Learning Test
Sum of A1-A5	Control	41.9	8.8	0.82	Student t
	HCV	41.3	9.1
Retroactive interference (A6/A5)	Control	0.84	0.15	0.42	Student t
	HCV	0.80	0.21
Proactive interference (B1/A1)	Control	0.96	0.57	0.493	Mann–Whitney
	HCV	1.04	0.58
Forgetting (A7/A6)	Control	0.98	0.13	0.780	Mann–Whitney
	HCV	1.01	0.30
Recognition	Control	11.6	3.8	0.802	Mann–Whitney
	HCV	11.3	3.5

HCV, hepatitis C virus; MMSE, Mini-Mental State Exam.