Table 4.
Linear regression results for gray matter volume (residualized for intracranial volume and age at scan).
| Independent Variable | B (SE) | β | R2 | R2 change | p |
|---|---|---|---|---|---|
| Sleep slope (res.) | −8.42 (30.51) | −.04 | .05 | .00 | .78 |
| Average sleep | −6.05 (16.23) | −.06 | .05 | .00 | .71 |
| Sleep at 1-mo | 2.56 (8.56) | .05 | .05 | .00 | .77 |
| Sleep at 3-mos | −7.66 (10.99) | −.11 | .06 | .01 | .49 |
| Sleep at 6-mos | −8.50 (13.06) | −.10 | .06 | .01 | .52 |
| Sleep at 9-mos | .0.50 (16.71) | .01 | .05 | .00 | .98 |
| Sleep at 12-mos | −10.70 (16.41) | −.10 | .06 | .01 | .52 |
Note. All models were adjusted for infant sex and gestational age at birth. Each row represents an independent model.