Table 2.

Relationships between statistical covariates and dependent variables

	Covariates
	Age	Sex	NART IQ	HC Volume
Dependent variables
VPA recall score	rs = −0.60, p = 0.05*	U = −1.59, p = 0.11	rs = 0.45, p = 0.16	rs = −0.06, p = 0.87
Bilateral ξ	rs = 0.38, p = 0.24	U = −0.46, p = 0.65	rs = 0.01, p = 0.97	rs = −0.17, p = 0.62
Left ξ	rs = 0.09, p = 0.79	U = −0.18, p = 0.86	rs = 0.12, p = 0.73	rs = 0.24, p = 0.48
Right ξ	rs = 0.48, p = 0.14	U = −1.10, p = 0.27	rs = −0.01, p = 0.97	rs = − 0.39, p = 0.24
Bilateral μ	rs = −0.18, p = 0.59	U = 0.00, p = 1.00	rs = −0.28, p = 0.40	rs = 0.16, p = 0.65
Left μ	rs = −0.44, p = 0.18	U = −0.18, p = 0.86	rs = 0.01, p = 0.99	rs = 0.34, p = 0.31
Right μ	rs = 0.06, p = 0.86	U = −0.37, p = 0.72	rs = −0.26, p = 0.45	rs = 0.25, p = 0.47
Bilateral volume	rs = 0.04, p = 0.91	U = 0.00, p = 1.00	rs = 0.35, p = 0.29	N/A
Left volume	rs = 0.07, p = 0.85	U = 0.00, p = 1.00	rs = 0.28, p = 0.40	N/A
Right volume	rs = −0.15, p = 0.66	U = −0.18, p = 0.86	rs = 0.40, p = 0.22	N/A

*p < 0.05

r_s, Spearman correlation coefficient; U, Mann-Whitney U test statistic