Table 4.

Pearson's correlation test between the main cognitive tasks and DTI parameters (considering z scores of all MS patients).

		MD	FA	AD	RD
HVLT-Immediate recall	r	0.09	0.25	0.12	−0.04
	P-value	0.7	0.2	0.6	0.9
HVLT-Delayed recall	r	0.33	−0.32	0.04	0.45
	P-value	0.1	0.1	0.8	0.03*
ROCF-Delayed recall	r	−0.10	0.15	−0.05	−0.014
	P-value	0.6	0.5	0.8	0.5
Logical memory I	r	−0.07	0.16	0.05	−0.21
	P-value	0.7	0.6	0.8	0.3
Logical memory II	r	−0.02	0.41	0.2	−0.21
	P-value	0.9	0.05**	0.3	0.3
Symbol Digit (SDMT)	r	−0.37	0.46	−0.17	−0.37
	P-value	0.07**	0.02*	0.4	0.07**
TMT	r	−0.31	−0.01	−0.37	−0.18
	P-value	0.1	0.9	0.08**	0.4
Stroop	r	−0.33	0.36	−0.12	−0.39
	P-value	0.1	0.08**	0.6	0.06**
FAS	r	−0.29	0.2	−0.17	−0.24
	P-value	0.2	0.3	0.4	0.3
Category association	r	−0.09	−0.04	−0.24	0.03
	P-value	0.7	0.9	0.3	0.9
Wisconsin	r	0.03	−0.15	−0.18	0.14
	P-value	0.9	0.5	0.3	0.5

*Significant correlation between cognitive test and DTI parameter.

**Cognitive tests that presented a tendency of correlation with the respective DTI parameter.