. 2019 May 16;11:117. doi: 10.3389/fnagi.2019.00117

TABLE 3.

Summary of hierarchical regression analysis for variables predicting free-water change (N = 61).

	Model 1			Model 2			Model 3			Model 4			Model 5			Model 6
Variable	B	SE(B)	β	B	SE(B)	β	B	SE(B)	β	B	SE(B)	β	B	SE(B)	β	B	SE(B)	β
Age	$4.77 e - 5$	0.000	0.020	$3.91 e - 5$	0.000	0.016	0.001	0.000	0.226	0.000	0.000	0.192	0.000	0.000	0.169	0.000	0.000	0.173
Race	0.005	0.006	0.106	0.005	0.006	0.111	0.009	0.006	0.181	0.013	0.007	${0.256}^{\land}$	0.013	0.006	${0.256}^{\land}$	0.012	0.006	${0.242}^{\land}$
CR				0.002	0.003	0.076	$- 0.001$	0.004	$- 0.035$	$- 0.003$	0.004	$- 0.117$	$- 0.007$	0.004	$- {0.252}^{\land}$	$- 0.007$	0.004	$- {0.247}^{\land}$
BI							0.008	0.004	${0.371}^{*}$	0.008	0.004	${0.345}^{*}$	0.007	0.004	${0.306}^{\land}$	0.008	0.004	${0.331}^{*}$
PS										0.008	0.004	${0.271}^{\land}$	0.006	0.004	0.205	0.007	0.004	0.223
IM													0.008	0.003	${0.355}^{*}$	0.010	0.004	${0.444}^{* *}$
DM		0.012			0.018			0.095								$- 0.004$	0.003	$- 0.169$

R²		0.347			0.332			${4.760}^{*}$			0.152			0.244			0.260
F for change in R²											${3.711}^{\land}$			${6.553}^{*}$			1.148

CR, cognitive reserve; BI, brain integrity; PS, processing speed; IM, immediate memory; DM, delay memory. *p < 0.05. **p < 0.01. $^{\land}$ 0.05 < p < 0.10.