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. Author manuscript; available in PMC: 2023 Jun 14.
Published in final edited form as: Sleep Health. 2022 Aug 12;8(5):498–504. doi: 10.1016/j.sleh.2022.06.008

Table 3.

Summary of multiple regression analyses for objective measures

n = 172 Gender Childhood trauma

B (SEB) Bz (SEBz) p B (SEB) Bz (SEBz) β p

Sleep latency (min) −3.305 (2.283) −0.226 (0.156) .150 −0.126 (0.208) −0.009 (0.014) −0.046 .544
Total sleep time (min) 8.535 (4.952) 0.267 (0.155) .087 0.651 (0.450) 0.020 (0.014) 0.109 .150
Wake after sleep onset (min) 0.514 (3.654) 0.022 (0.15 .888 0.145 (0.332) 0.006 (0.014) 0.033 .663
Sleep Efficiency 0.672 (0.863) 0.123 (.0158) .437 0.012 (0.078) 0.002 (0.014) 0.011 .883
Stage 1% −0.408 (0.452) −0.141 (0.156) .368 0.016 (0.041) 0.005 (0.014) 0.029 .701
Stage 2% −1.617 (l.085) −0.224 (0.150) .138 −0.144 (0.099) −0.020 (0.014) −0.107 .146
Delta % 3.032 (1.077) 0.400 (0.142) .005 0.052 (0.098) 0.007 (0.013) 0.037 .597
Delta ratio −0.074 (0.172) −0.067 (0.156) .669 −0.009 (0.016) −0.008 (0.014) −0.046 .550
NREM % 1.007 (0.771) 0.204 (0.156) .193 −0.076 (0.07) −0.015 (0.014) −0.083 .279
REM % −1.007 (0.771) −0.204 (0.156) .193 0.076 (0.07) 0.015 (0.014) 0.083 .279
REM density* 0.416 (0.721) 0.090 (0.156) .565 −0.132 (0.066) −0.029 (0.014) −0.154 .045
REM Fragmentation −0.585 (0.525) −0.175 (0.157) .267 0.055 (0.048) 0.017 (0.014) 0.089 .249

B, unstandardized coefficient of beta; Bz, unstandardized coefficient of beta calculated w/standardized outcome/dependent variable; SEB, standardized error of the coefficient; β, standardized coefficient of beta indicating the extent to which a one standard deviation change in the independent variable relates to a one standard deviation change in the outcome; p, p value. SDs in the PSG sample (n = 172) as follows: CTQSD = 5.37, Delta%SD = 7.58, REM DensitySD = 4.63.

Note: bolded p < .05 and survived Benjamini-Hochberg correction for multiple comparisons.