Table 1.
Similarities in sleep–wake behavior between day 1 and day 2.
| Outcome measure | βSex × Daya | P-valueb | Figurec |
|---|---|---|---|
| Total sleep (%) | − 0.02 | 0.87 | 1A |
| NREM sleep (%) | − 0.01 | 0.95 | 1B |
| REM sleep (%) | − 0.09 | 0.18 | 1C |
| WAKE (%) | 0.03 | 0.82 | 1D |
| Total sleep (min) | − 0.01 | 0.22 | 3A |
| NREM sleep (min) | 0.004 | 0.77 | 3B |
| REM sleep (min) | 0.04 | 0.07 | 3C |
| WAKE (min) | 0.0006 | 0.94 | 3D |
| Total sleep bout length (sec) | − 0.04 | 0.59 | 5A |
| NREM sleep bout length (sec) | 0.10 | 0.16 | 5B |
| REM sleep bout length (sec) | 0.003 | 0.95 | 5C |
| WAKE bout length (sec) | 0.03 | 0.85 | 5D |
No statistically significant (p < 0.05) differences existed between day 1 and day 2, for either sex, for any outcome measures assessed in this study.
aCoefficient estimate for the sex × day interaction from the fitted model.
bProbability of obtaining results at least as extreme as the results observed if the null hypothesis is correct.
cCorresponding figure to which the coefficient estimate applies.