Table 5.
Insomnia severity as predictor of discrepancies (differences) between subjective and objective sleep efficiency and total sleep time.
| Predictive Factor | Total Sleep Time
|
Sleep Efficiency
|
|---|---|---|
| PSQI (TST) – Acti (TST) | PSQI (SE) – Acti (SE) | |
| Age | 1.612 1.412) |
.285 .224) |
| Depression, PHQ9 | 2.921 4.026) |
.864 .640) |
| Total chronic conditions | −1.034 .981) |
−.0452 .156) |
| Cognitive status, MMSE | 3.461 4.657) |
.523 .740) |
| Functional status, OARS | −.156 2.887) |
.221 .459) |
| Pain severity, GPM | −.784 1.468) |
−.232 .233) |
| Beliefs and attitudes about sleep, DBAS | 1.968 5.518) |
−.379 .876) |
| Insomnia severity, ISI | −10.25*** 2.591) |
−1.895*** .412) |
| Observations | 57 | 57 |
| R2 | .350 | .425 |
| Adjusted R2 | .242 | .329 |
Notes: Standard errors appear in parentheses.
*
p < .05
**
p < .01
***
p < .001.