Table 2.
Significance (P level) of the relation between log beta (16-32 Hz) power and potential covariates
| NREM | REM | Direction | |
|---|---|---|---|
| Hot flash frequency | 0.0081 | 0.0087 | + |
| Overall health | 0.028 | 0.031 | − |
| SSRI use | 0.039 | 0.41 | + |
| BMI | 0.045 | 0.098 | + |
| Blood pressure medicine in past 2 weeks | 0.072 | 0.17 | + |
| Caffeinated drinks per day | 0.095 | 0.027 | + |
| How upset by increased workload | 0.10 | 0.27 | + |
| Race/ethnicity-site | 0.13 | 0.54 | N/A |
| How hard to provide basics | 0.14 | 0.34 | + |
| Quality of life | 0.16 | 0.16 | ± |
| Body pain | 0.18 | 0.069 | + |
| Social support | 0.18 | 0.29 | ± |
| Nap duration | 0.19 | 0.84 | + |
| IDS (without sleep questions) | 0.35 | 0.60 | + |
| Log AHI | 0.70 | 0.52 | + |
| Age | 0.85 | 0.22 | + |
Results are from ANOVA for class variables and from regression for continuous variables entered one at a time. The “Direction” column indicates whether beta power is positively or negatively related to the covariate.