Table 3.

Correlations of age, the T1w/T2w ratio, and diffusion metrics in regions of interest^a

	1	2	3
L arcuate fasciculus (nodes 73–88)
1. Age	—
2. T1w/T2w ratio	−0.64***	—
3. FA	0.05	0.02	—
L arcuate fasciculus (nodes 40–85)
1. Age	—
2. T1w/T2w ratio	−0.67***	—
3. MD	0.38***	−0.45***	—
R arcuate fasciculus (nodes 51–75)
1. Age	—
2. T1w/T2w ratio	−0.60***	—
3. MD	0.32**	−0.43***	—
L frontoparietal SLF (nodes 1–11)
1. Age	—
2. T1w/T2w ratio	−0.69***	—
3. MD	0.30**	−0.39***	—
R frontoparietal SLF (nodes 84–100)
1. Age	—
2. T1w/T2w ratio	−0.74***	—
3. MD	0.29**	−0.33***	—

^aT1w/T2w ratio and diffusion metrics were averaged across the relevant nodes. L, Left; R, right.

**p < 0.01;

***p < 0.001.