Table 2.
Linear regression analysis, stepwise method showing factors independently predicting the mean Pittsburgh Sleep Quality Index
| VARIABLES | BETA | t | SIGNIFICANCE |
|---|---|---|---|
| CONSTANT | --- | 2.85 | 0.01 |
| PCL hypervigilance, mean | 0.455 | 2.34 | 0.03 |
| EXCLUDED VARIABLES | |||
| Education (years) | -0.229 | -1.15 | 0.27 |
| Actigraphic sleep duration, mean | 0.290 | 1.50 | 0.15 |
| Sleep log awakenings, mean | 0.275 | 1.39 | 0.18 |
| Beck Depression Inventory, mean | 0.211 | 0.63 | 0.54 |
| PCL, avoidance, mean | 0.230 | 0.66 | 0.52 |
KEY:
- PCL
Posttraumatic Stress Disorder Checklist