Table 3:

Analysis of variance of fixed effects on longitudinal changes comparing evolution of DTI metrics from different tissue types during 4 years

	P Value
NAWM vs GAD
RD	.11
AD	<.001^{^a}
FA	.004^{^a}
MD	<.001^{^a}
NAWM vs T2 lesions
RD	.15
AD	.002^{^a}
FA	.09
MD	.037
BH vs NBH
RD	.36
AD	.39
FA	.01^{^a}
MD	.07

↵a P < .05.