Table 2.
Results from ANOVA, time of day and group for the three variables and their three levels. F-ratios, p-values
| Variables | Time F-ratio |
Group F-ratio |
T*G F-ratio |
Difference high vs. low group, p |
|---|---|---|---|---|
| SE | 215.0*** | 7.2*** | 1.2 | <.01 |
| TST | 245.8*** | 1.0 | 2.9 | >.05 |
| N1% | 250.5*** | 1.6 | 1.0 | >.05 |
| REM% | 238.1*** | 0.1 | 1.7 | >.05 |
| Df (range) | 6/1812–1824 | 2/303–304 | 12/1812–1824 |
*p < .05, **p < .01, *** p < .001. eta2 for time: 0.52 for sleep efficiency (SE), 0.45, for total sleep time (TST), 0.44 for REM%, and 0.46 for N1%. Eta2 for group: 0.05 for SE and <0.02 for the other three variables. Eta2 for interaction <0.02 for all variables. Adjustment for age.