Skip to main content
. 2014 Nov 26;71(3):458–462. doi: 10.1093/geronb/gbu162

Table 1.

Sleep Variables Predicting Positive and Negative Affect

Positive affect Negative affect
Fixed effects
Predictor variable B SE df t p Value B SE df t p Value
Within-person
 Occasion −0.03 0.01 221.70 −2.03 .04 −0.02 0.01 183.82 −1.70 .09
 TWTo −0.001 0.001 222.01 −0.62 .54 −0.001 0.002 11.30 −0.61 .55
 TWTs −0.001 0.001 21.99 −1.13 .27 0.001 0.001 13.96 2.34 .03
 SQR 0.03 0.06 59.25 0.57 .57 −0.18 0.04 32.42 −4.39 .0001
Between-person
 TWTo −0.0001 0.01 48.05 −0.02 .98 −0.004 0.003 49.03 −1.28 .21
 TWTs −0.002 0.002 46.04 −1.03 .31 0.002 0.001 45.92 1.52 .14
 SQR −0.29 0.19 45.14 −1.50 .14 −0.36 0.13 45.06 −2.85 .01
Random effects
Covariance parameter B SE Z p Value B SE Z p Value
Within-person
 TWTo 0.00003 0.00003 0.90 .37
 TWTs 0.00001 0.00001 1.22 .22 0.000001 0.000003 0.38 .70
 SQR 0.06 0.02 2.59 .01 0.02 0.02 1.43 .15
Within pseudo R 2 .22 Within pseudo R 2 .43
Between pseudo R 2 .08 Between pseudo R 2 .21

Note. TWTs = subjective total wake time; TWTo = objective total wake time; SQR = sleep quality rating.