Table 4.

Significant linear regression results of EF with a speed component regressed on FW in specific white matter tracts. All analysis are corrected for age and the risk factors hypertension, diabetes, hypercholesterolemia, BMI and smoking. Results are uncorrected for multiple comparisons.

Variable	B	Std. error	beta	p	VIF	R² change	R ²
age	−0.034	0.004	−0.51	<0.001	1.533	0.017	0.421
hypertension	−0.052	0.09	−0.034	0.565	1.142
diabetes	−0.19	0.133	−0.081	0.154	1.051
hypercholesterolemia	−0.161	0.097	−0.093	0.098	1.044
sex	−0.204	0.083	−0.137	0.015	1.032
BMI	−0.01	0.01	−0.058	0.326	1.137
current smoker	−0.132	0.13	−0.059	0.31	1.127
fornix	−0.567	0.237	−0.154	0.018	1.371
age	−0.035	0.004	−0.529	<0.001	1.471	0.015	0.416
hypertension	−0.023	0.089	−0.015	0.794	1.149
diabetes	−0.236	0.132	−0.1	0.075	1.044
hypercholesterolemia	−0.133	0.097	−0.077	0.168	1.046
sex	−0.169	0.083	−0.114	0.043	1.05
BMI	−0.006	0.01	−0.037	0.526	1.137
current smoker	−0.145	0.126	−0.067	0.25	1.135
corpus callosum body prefrontal	−2.973	1.329	−0.141	0.026	1.327
age	−0.035	0.004	−0.538	<0.001	1.374	0.016	0.418
hypertension	−0.012	0.089	−0.008	0.89	1.158
diabetes	−0.25	0.132	−0.106	0.06	1.049
hypercholesterolemia	−0.152	0.096	−0.088	0.115	1.042
sex	−0.161	0.083	−0.109	0.054	1.06
BMI	−0.006	0.01	−0.038	0.515	1.137
current smoker	−0.157	0.125	−0.073	0.21	1.125
corpus callosum body premotor	−3.27	1.402	−0.142	0.021	1.252
age	−0.035	0.004	−0.528	<0.001	1.449	0.016	0.418
hypertension	−0.025	0.089	−0.016	0.778	1.148
diabetes	−0.231	0.132	−0.098	0.081	1.043
hypercholesterolemia	−0.125	0.097	−0.072	0.198	1.053
sex	−0.17	0.083	−0.114	0.042	1.048
BMI	−0.005	0.01	−0.03	0.612	1.138
current smoker	−0.145	0.126	−0.067	0.251	1.134
corpus callosum genu	−2.996	1.286	−0.146	0.021	1.321

Abbreviations: B = regression coefficient, Std. error = standard error, VIF = variance inflation factor, R² change = variance explained by the specific tract.