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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: J Youth Adolesc. 2016 Oct 25;46(1):121–135. doi: 10.1007/s10964-016-0591-2

Table 2.

Fixed and random effects estimates for multilevel models predicting diurnal cortisol from individual differences in active coping style, chronic interpersonal stress, and their interaction

Fixed effects Waking cortisol
Cortisol awakening response
Diurnal cortisol slope
Diurnal cortisol AUCg
Est. SE Est. SE Est. SE Est. SE
Intercept: average level, γ00 −1.754** 0.159   0.154* 0.050 −0.124** 0.022   79.386**   3.862
Level 1 (day-specific)
  Wake time, γ10 −0.122 0.081   0.030 0.047   0.009 0.013   −4.210**   0.858
  Non-compliance, γ20   0.233 0.123 −0.097** 0.037 −0.011 0.014   −0.721   1.875
Level 2 (person-specific)
  Active coping style, γ01   0.060 0.213 0.132* 0.062 0.041** 0.015   −8.009**   2.970
  Interpersonal stress, γ02 −0.205 0.136 −0.004 0.039 −0.005 0.012   −5.229*   2.453
  Coping × stress, γ03 −0.010 0.414 0.246* 0.095   0.068** 0.023     2.045   5.970
  White race/ethnicity, γ04 −0.063 0.136   0.014 0.044 −0.050** 0.017   −3.142   3.778
  Pubertal status, γ05   0.054 0.085   0.005 0.031   0.023* 0.010     5.452**   1.898
  Internalizing symptoms, γ06 −0.056 0.064   0.014 0.017   0.001 0.006     0.072   1.080
Random effects
  σ2ε (L1 residual variance)   0.365** 0.059   0.089** 0.026   0.009** 0.001 148.177** 35.121
  σ2u0 (L2 residual variance)   0.240** 0.084   0.007 0.005   0.002* 0.001   77.942** 20.559

Note 366 days (Level 1) nested within 122 individuals (Level 2). Wake time within-person centered and all continuous Level 2 predictors grand-mean centered. Non-compliance dummy coded (1 = not compliant with saliva sampling procedures). White race/ethnicity dummy coded (1 = White). Outcomes calculated from log-based cortisol values (μg/dl). Bold indicates significant findings in support of hypotheses

Est. partial regression coefficient estimate, SE robust standard error

p < .10,

*

p < .05,

**

p < .01