Table 4.
Mixed-Effect Regression Results for the Interaction Between Time and Very High-Frequency Power
| Variable | AIC | β | SE | t | p | Random effects |
d |
|---|---|---|---|---|---|---|---|
| Block 1 | 397.2 | ||||||
| Intercept | 5.69 | .43 | 13.16 | <.001 | 5.56 | 3.24 | |
| Time | .08 | .04 | 2.21 | .03 | .03 | 0.54 | |
| Block 2 | 408 | ||||||
| Intercept | 6.52 | .64 | 10.21 | <.001 | 5.96 | 2.51 | |
| Time | .08 | .04 | 2.21 | .03 | .03 | 0.55 | |
| VHFP | −.002 | .004 | −0.737 | .47 | — | ||
| Block 3 | 417.4 | ||||||
| Intercept | 5.23 | .86 | 6.11 | <.001 | 5.65 | 1.50 | |
| Time | .22 | .06 | 3.60 | .001 | .02 | 0.89 | |
| VHFP | .003 | .004 | 0.63 | .53 | — | 0.16 | |
| Time × VHFP | −.0008 | .0003 | −2.74 | .01 | — | 0.67 |
Note. AIC = Akaike’s information criteria; VHFP = very high-frequency power. Dashes indicate no random effect parameter estimates.