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Neural Plasticity

Neural Plasticity / 2016 / Article / Tab 5

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).
VariableBSEBeta
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 
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.