Table 3. Multilevel, linear mixed model of the relationship between menstrual phase and sleeping WST, controlling for all significant covariates.
| Unstandardized b-coefficient | S.E.M. | |
|---|---|---|
| Intercept | 36.29 | 0.34 |
| Cycle phase | ||
| Menstrual | Reference | Reference |
| Follicular | −0.01 | 0.03 |
| Fertile | −0.11§ | 0.01 |
| Early-luteal | 0.25§ | 0.02 |
| Late-luteal | 0.38§ | 0.03 |
| Meal1 | ||
| Small or no food | Reference | Reference |
| Medium-sized | −0.02* | 0.01 |
| Large | −0.04§ | 0.01 |
| Body mass index (kg/m2) | −0.05§ | 0.01 |
| Sexual intercourse1 | −0.02† | 0.01 |
| Alcohol1 | ||
| No alcohol | Reference | Reference |
| 1–4 units | 0.01 | 0.01 |
| ≥5 units | 0.07§ | 0.02 |
*, †, § refer to P<0.10, 0.05, 0.001, respectively.
1
Within 3 h preceding the onset of sleep.