Research Article
Sleep Spindles Characteristics in Insomnia Sufferers and Their Relationship with Sleep Misperception
Table 5
Summary of multiple regression analysis for overestimation (Misperception Index < 0).
| Variable | B | SE | Beta |
| Intercept | | | | Stage 2 sleep spindles | | | | Number | 0.000 | 0.000 | | Density | 0.059 | 0.078 | | Duration | 0.135 | 0.238 | | Frequency | | 0.057 | | Amplitude | 0.002 | 0.002 | | SWS sleep spindles | | | | Number | | 0.001 | | Density | | 0.027 | 1.482 | Duration | | 0.184 | 0.112 | Frequency | | 0.029 | 0.054 | Amplitude | | 0.002 | | Objective sleep measures | | | | SOL (min) | 0.002 | 0.002 | 0.314 | WASO (min) | 0.001 | 0.002 | 0.329 | TST (min) | 0.001 | 0.002 | 0.718 | SE (%) | 0.006 | 0.012 | 0.580 | Stage 1 (min) | | 0.025 | | Stage 1 (%) | 0.169 | 0.100 | 7.587 | Stage 2 (min) | — | — | — | Stage 2 (%) | — | — | — | Stage SWS (min) | | 0.011 | −5.435 | Stage SWS (%) | 0.071 | 0.047 | 6.243 | REM (min) | | 0.200 | | REM (%) | 0.008 | 0.005 | |
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Note. = ; = . B: unstandardized regression coefficient; SE: standard error of the coefficient; beta: standardized coefficient. SOL: sleep onset latency. WASO: wake after sleep onset. TST: total sleep time. SE: sleep efficiency. SWS: slow wave sleep. REM: rapid eye movement.
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