Table 2.

Slope, β, and significance, p, of the regression terms incorporated in the multiple linear regression given by: MWF ~ β₀ + β_WC × WC + β_age × age + β_age² ×age² + β_sex × sex + β_ethnicity × ethnicity. The results of sex and ethnicity are not shown as they exhibited non-significant associations with MWF in all ROIs. All p-values presented are obtained after FDR correction.

MWF
	WC		Age		Age2
	βWC (× 104)	pWC	βage (× 104)	page	βage2 (× 105)	page2
WB	−8.28	0.005	−6.23	0.000	−2.30	0.003
FL	−9.02	0.005	−7.52	0.000	−2.56	0.003
OL	−8.83	0.008	−4.67	0.000	−2.56	0.008
PL	−9.08	0.005	−5.30	0.000	−2.34	0.003
TL	−9.36	0.005	−7.57	0.000	−2.44	0.008
CRB	−5.98	0.026	−3.83	0.000	−1.29	0.058
BCC	−8.51	0.011	−6.52	0.000	−2.05	0.016
GCC	−8.69	0.005	−8.55	0.000	−1.79	0.014
SCC	−8.57	0.007	−5.93	0.000	−2.76	0.003
IC	−7.61	0.011	−6.31	0.000	−1.95	0.011
CP	−5.89	0.023	−2.45	0.000	−1.10	0.089
ACR	−10.90	0.005	−9.10	0.000	−2.23	0.011
PCR	−13.66	0.002	−9.65	0.000	−2.96	0.003
ATR	−10.35	0.005	−7.67	0.000	−1.78	0.023
PTR	−10.16	0.005	−8.41	0.000	−2.40	0.006
SFOF	−8.59	0.008	−9.48	0.000	−2.54	0.003
IFOF	−9.34	0.008	−8.02	0.000	−2.38	0.009
SLF	−12.08	0.000	−7.20	0.000	−2.44	0.003
ILF	−9.71	0.007	−6.43	0.000	−2.30	0.008
Fm	−10.01	0.005	−6.072	0.000	−2.56	0.003
FM	−3.95	0.210	−3.32	0.003	−2.56	0.029

MWF: myelin water fraction, WC: waist circumference, WB: whole brain, FL: frontal lobes, PL: parietal lobes, TL: temporal lobes, OL: occipital lobes, CRB: cerebellum, BCC: body of corpus callosum, GCC: genu of corpus callosum, SCC: splenium of corpus callosum, IC: internal capsules, CP: cerebral peduncle, ACR: anterior corona radiata, PCR: posterior corona radiata, ATR: anterior thalamic radiation, PTR: posterior thalamic radiation, IFOF: inferior fronto-occipital fasciculus, SFOF: superior fronto-occipital fasciculus, ILF: inferior longitudinal fasciculus, SLF: superior longitudinal fasciculus, Fm: forceps minor, FM: forceps major.