Table 5.
Sleep Behavior Predicting Same Night Sleep Efficiency
| Independent Variable | Dependent Variable | b | SE | 95% CI | t | p |
|---|---|---|---|---|---|---|
| Nap (yes/no) | Diary Sleep Efficiency (%) | −0.51 | 1.43 | −3.31, 2.29 | −0.36 | 0.7210 |
| Nap duration (min) | Diary Sleep Efficiency (%) | −0.06 | 0.02 | −0.10, −0.02 | −3.27 | 0.0014* |
| Bed Time (min from midnight) | Diary Sleep Efficiency (%) | −0.02 | 0.01 | −0.04, −0.01 | −2.90 | 0.0038* |
| Rise Time (min from midnight) | Diary Sleep Efficiency (%) | 0.02 | 0.01 | 0.01, 0.04 | 3.24 | 0.0013* |
| Time in Bed (min) | Diary Sleep Efficiency (%) | 0.02 | 0.01 | 0.01, 0.03 | 3.44 | 0.0006* |
|
| ||||||
| Nap (yes/no) | Actigraphy Sleep Efficiency (%) | −0.87 | 0.83 | −2.49, 0.76 | −1.05 | 0.2951 |
| Nap duration (min) | Actigraphy Sleep Efficiency (%) | −0.04 | 0.01 | −0.06, −0.02 | −4.41 | <.0001* |
| Bed Time (min from midnight) | Actigraphy Sleep Efficiency (%) | −0.004 | 0.005 | −0.01, 0.01 | −0.83 | 0.4066 |
| Rise Time (min from midnight) | Actigraphy Sleep Efficiency (%) | 0.023 | 0.004 | 0.01, 0.03 | 5.57 | <.0001* |
| Time in Bed (min) | Actigraphy Sleep Efficiency (%) | 0.02 | 0.00 | 0.01, 0.03 | 5.88 | <.0001* |
*
p<.0125 for Nap duration
*
p<.01 for Bed Time, Rise Time, and Time in Bed
Note. The nap variable was a dichotomous variable based on whether a nap was reported on that day. Nap duration was the mean duration of the nap on days when a nap was taken. Units for bed time and rise time are reported in minutes centered on midnight, such that negative values are before midnight and positive values are after midnight.