Table 2 Within- and between-person effects of prior-night sleep on next-day fatigue

Fixed effects

 Level 1 (Within-person effects)

  Intercept (mean), γ₀₀

2.69 (0.09)***

  Time in study (day), γ₁₀

0.00 (0.02)

  Same-day positive emotions, γ₂₀

–0.11 (0.08)

  Same-day negative emotions, γ₃₀

0.47 (0.09)***

  Prior-night time in bed, γ₄₀

–0.07 (0.06)

  Prior-night time in bed², γ₅₀

0.06 (0.03)*

  Prior-night sleep quality, γ₆₀

–0.11 (0.05)*

 Level 2 (Between-person effects)

  Age, γ₀₁

–0.02 (0.10)

  Gender, γ₀₂

0.06 (0.24)

  Living arrangements, γ₀₃

–0.27 (0.24)

  Physical health, γ₀₄

0.30 (0.19)

  Mental health, γ₀₅

–0.02 (0.03)

  Average positive emotions, γ₀₆

0.01 (0.14)

  Average negative emotions, γ₀₇

0.70 (0.22)**

  Average time in bed, γ₀₈

0.02 (0.10)

  Average sleep satisfaction, γ₀₉

–0.20 (0.15)

Random effects

 Level 1

  Residual

0.60 (0.06)***

  Autocorrelation

0.18 (0.07)*

 Level 2

  Intercept

0.37 (0.10)***