Table 3.

ANCOVA on white matter‐indices

		FA	AD	RD	MD
LV5
Fornix	p‐value	<.01a	<.01a	<.01a	<.01a
	F‐value	12.77	18.06	14.62	6.27
Right medial lemniscus	p‐value	.01a	.61	.02a	.19
	F‐value	6.29	0.25	5.73	1.69
Left medial lemniscus	p‐value	<.01a	.58	<.01a	.13
	F‐value	7.84	0.31	7.31	2.37
LV6
Left uncinate fasciculus	p‐value	<.01a	.14	.01a	.39
	F‐value	8.00	2.18	6.56	0.73
Left superior cerebellar peduncle	p‐value	<.05a	.51	.10	.37
	F‐value	4.04	0.45	2.66	0.81

Note: Table 3 shows the results from the exploratory interaction test on additional white matter‐indices. The regions tested had demonstrated interaction‐effect in the PLS‐C, and next we performed analyses of covariance (ANCOVA) by correlating cognition scores with fractional anisotropy (FA) and the additional WM‐indices: axial diffusivity (AD), radial diffusivity (RD), and mean diffusivity (MD).

Abbreviations: FA, fractional anisotropy; LV, latent variable; PLS‐C, partial least square correlation; WM, white matter.

^aSignificant interaction‐effect. Slopes are visualized in Table S5.