Table 2.

Multiple Regression Fractional Anisotropy Results for Cannabis, Binge Drinking, and Cannabis and Binge Co-Use Days As Primary Variables

	BG		CAN		CO
Tract	Beta	p	Beta	p	Beta	P
Forceps major	−0.08	0.60	−0.14	0.41	−0.08	0.68
Forceps minor	−0.01	0.93	−0.11	0.50	0.22	0.28
Left ILF	0.03	0.84	0.48	0.003*	−0.46	0.02*
Right ILF	−0.13	0.37	0.12	0.47	−0.10	0.61
Left uncinate	−0.06	0.68	0.14	0.41	−0.18	0.36
Right uncinate	0.02	0.87	0.13	0.44	−0.17	0.38
Left ATR	0.17	0.23	0.39	0.02*	−0.37	0.054
Right ATR	0.32	0.03*	0.32	0.048*	−0.50	0.01*
Left CAB	0.09	0.55	0.20	0.24	−0.30	0.13
Right CAB	0.08	0.60	−0.13	0.45	0.001	0.99
Left CCG	0.19	0.16	0.53	0.001*	−0.48	0.01*
Right CCG	0.06	0.66	0.36	0.03*	−0.26	0.19
Left SLF parietal	0.20	0.17	0.28	0.10	−0.30	0.13
Right SLF parietal	0.18	0.21	0.36	0.03*	−0.32	0.10
Left SLF temporal	0.24	0.10	0.18	0.27	−0.20	0.31
Right SLF temporal	0.21	0.16	0.17	0.31	−0.26	0.18

^*p<0.05.

ILF, inferior longitudinal fasciculus; ATR, anterior thalamic radiation; CCG, cingulum cingulate gyrus; CAB, cingulum angular bundle; SLF, superior longitudinal fasciculus.