Table 2.

Linear mixed-effects model examining the coupling of cortisol and DHEA as moderated by mean adrenal pubertal stage and Group (N = 294).

Fixed effects	Estimate (SE)	Standardized Estimate	t	p
Intercept, γ₀₀	1.96 (0.03)	0.03	69.45	< .001
Session, γ₂₀	0.08 (0.01)	0.14	6.44	< .001
Sample time^a, γ₃₀	−0.02 (0.02)	−0.03	−1.10	.27
Group (1 = PI), γ₀₁	0.03 (0.04)	0.06	0.80	.43
Mean adrenal pubertal stage (across sessions)^a, γ₀₂	0.17 (0.02)	0.54	9.90	< .001
Mean log₁₀cortisol (across sessions)^a, γ₀₃	4.39 (1.45)	0.15	3.04	.003
Mean adrenal pubertal stage^a x Group, γ₀₄	−0.01 (0.03)	−0.04	−0.43	.67
Group x Mean log₁₀cortisol^a, γ₀₅	1.99 (2.40)	0.07	0.83	.41
Individual-mean-centered (IMC) log₁₀cortisol, γ₁₀	3.82 (0.95)	0.11	4.02	< .001
Mean adrenal pubertal stage^a x IMC log₁₀cortisol, γ₁₁	−0.39 (0.59)	−0.02	−0.67	.50
IMC log₁₀cortisol x Group, γ₁₂	−1.82 (1.47)	−0.05	−1.23	.22
Mean adrenal pubertal stage^a x IMC log₁₀cortisol x Group, γ₁₃	2.24 (1.01)	0.09	2.23	.03
Random effects	Variance	SD
Intercept	0.10	0.32
Session	0.01	0.08
Residual	0.04	0.21

Note. DHEA is the dependent variable.

Grand-mean-centered. Marginal R²_GLMM = .37. Conditional R²_GLMM = .79