Table 3. Partial-R² and Cohen’s f² values for the effect of DTI parameter (FA, MD, RD, or AD) in within-subject (longitudinal) correlations between qR₁ and DTI metrics extracted from 18 WM regions.

Analyses control for gestational age at scan. Significant partial-R² and Cohen’s f² values (P_corrected<0.05) are bolded.

	FA			MD			RD			AD
ROI	partial-R2	Cohen’s f2	P-value	partial-R2	Cohen’s f2	P-value	partial-R2	Cohen’s f2	P-value	partial-R2	Cohen’s f2	P-value
FX	0.405	0.681	<0.001	0.068	0.073	0.010	0.182	0.222	<0.001	0.036	0.037	0.031
AC	0.526	1.110	<0.001	0.481	0.927	<0.001	0.538	1.165	<0.001	0.381	0.616	<0.001
CBP	0.512	1.049	<0.001	0.126	0.144	<0.001	0.326	0.484	<0.001	0.078	0.085	0.006
CC	0.470	0.887	<0.001	0.494	0.976	<0.001	0.527	1.114	<0.001	0.201	0.252	<0.001
CST	0.289	0.406	<0.001	0.233	0.304	<0.001	0.306	0.441	<0.001	0.033	0.034	0.061
ML	0.139	0.161	0.071	0.118	0.134	0.001	0.122	0.139	<0.001	0.022	0.022	0.127
CP	0.321	0.473	<0.001	0.178	0.217	<0.001	0.264	0.359	<0.001	0.015	0.015	0.221
IC	0.615	1.597	<0.001	0.533	1.141	<0.001	0.626	1.674	<0.001	0.101	0.112	0.001
CR	0.635	1.740	<0.001	0.650	1.857	<0.001	0.684	2.165	<0.001	0.663	1.967	<0.001
SS	0.573	1.342	<0.001	0.492	0.969	<0.001	0.563	1.288	<0.001	0.303	0.435	<0.001
EC	0.580	1.381	<0.001	0.573	1.342	<0.001	0.627	1.681	<0.001	0.597	1.481	<0.001
CING	0.424	0.736	<0.001	0.572	1.336	<0.001	0.592	1.451	<0.001	0.521	1.088	<0.001
ST	0.638	1.762	<0.001	0.120	0.136	0.002	0.404	0.678	<0.001	0.105	0.117	0.004
SLF	0.608	1.551	<0.001	0.635	1.740	<0.001	0.675	2.077	<0.001	0.664	1.976	<0.001
SFO	0.431	0.757	<0.001	0.531	1.132	<0.001	0.564	1.294	<0.001	0.361	0.565	<0.001
UF	0.488	0.953	<0.001	0.526	1.110	<0.001	0.615	1.597	<0.001	0.256	0.344	<0.001
MLF	0.037	0.038	0.046	0.009	0.009	0.349	0.018	0.018	0.188	0.002	0.002	0.690
PTR	0.422	0.730	<0.001	0.555	1.247	<0.001	0.574	1.347	<0.001	0.082	0.089	0.005