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. Author manuscript; available in PMC: 2008 Nov 17.
Published in final edited form as: Psychosom Med. 2005;67(1):147–155. doi: 10.1097/01.psy.0000146328.52009.23

Table 4.

Multilevel Regression Predictions of Weekly Fatigue

Random Effects: Prediction of Weekly Fatigue
Covariance Parameter Estimates Subject Estimate Std. Error Z P
Variance of intercepts UN (1,1) ID 0.50 0.08 6.48 < .01
Autoregressive component AR (1) ID 0.26 0.04 7.11 < .01
Level 1 residual Residual 0.53 0.03 19.46 < .01
Fixed Effects
Predictor Variables β Std. Error DF T p
Level 1
    Δ in Interpersonal Stress (ΔIS) 0.09 0.11 1046 0.78 .44
    Δ in Positive Events (ΔPE) −0.007 0.004 1046 −1.87 .06
Level 2
    Neuroticism 0.18 0.10 119 1.81 .07
    Diagnosis 0.61 0.16 119 3.89 < .01
    Average PE −0.01 0.006 119 −2.14 .03
    Average IS 0.26 0.21 119 1.23 .22
Level 1 × Level 2
    ΔIS × Diagnosis 0.33 0.13 1046 2.49 .01
    ΔPE × Diagnosis −0.003 0.005 1046 −0.64 .53