TABLE IV. Mediation between Age and RSFA components, by rsMEG variability (Model 2).

Paths
			a						b						c ′						c						ab
M		DV	β	SE	Z	p	LLCI	ULCI	β	SE	Z	p	LLCI	ULCI	β	SE	Z	p	LLCI	ULCI	β	SE	Z	p	LLCI	ULCI	β	SE	Z	p	LLCI	ULCI
α-band	IC2	IC1	0.168	0.057	2.918	0.004	0.037	0.301	0.133	0.051	2.502	0.012	0.013	0.252	−.330	0.053	−3.652	<.001	−.456	−.211	−.308	0.051	−3.646	<.001	−.431	−.192	0.022	0.012	2.615	0.009	0.002	0.061
	IC2	IC5	0.168	0.057	3.095	0.002	0.038	0.300	0.135	0.055	2.502	0.012	0.010	0.265	−.251	0.055	−3.726	<.001	−.379	−.126	−.228	0.053	−3.722	<.001	−.352	−.108	0.023	0.012	2.673	0.008	0.002	0.062
β-band	IC1	IC5	0.371	0.052	3.732	<.001	0.250	0.494	0.147	0.060	2.389	0.017	0.006	0.290	−.283	0.057	−3.699	<.001	−.414	−.153	−.228	0.053	−3.666	<.001	−.353	−.107	0.055	0.024	2.497	0.013	0.004	0.117
	IC2	IC1	0.365	0.051	3.625	<.001	0.246	0.481	0.124	0.050	2.467	0.014	0.006	0.234	−.353	0.054	−3.632	<.001	−.483	−.231	−.308	0.051	−3.625	<.001	−.432	−.194	0.045	0.020	2.558	0.011	0.004	0.096
	IC2	IC5	0.365	0.051	3.663	<.001	0.244	0.481	0.176	0.058	3.006	0.003	0.040	0.310	−.293	0.058	−3.767	<.001	−.429	−.159	−.228	0.054	−3.732	<.001	−.353	−.104	0.064	0.024	3.077	0.002	0.016	0.127

The Mediation regression Coefficients (β), Standard Errors (SE), Z-scores, P-values and 99% CIs (LLCI and ULCI) for paths a, b, c, c′, and ab (see Fig. 8). The independent variable (IV) and the dependent variable (DV) were age and RSFA independent component (IC) loading values, respectively, for tests with 99% CIs not including zero. The mediator (M) was the IC loading value of rsMEG variability in different frequency bands.