Table 3.

Linear Mixed Model Summary of Changes in Total Sleep Problems by Attention-Deficit/Hyperactivity Disorder Treatment Assignment

	Estimated marginal mean (SE)	Coefficient (SE)	z	p	CI
Time		−0.24 (0.15)	−1.59	0.11	−0.54 to 0.06
Pretreatment
Medication	1.95 (0.15)	−0.08 (0.21)	−0.37	0.71	−0.50 to 0.34
Behavioral treatment	1.87 (0.15)	−0.16 (0.21)	−0.74	0.46	−0.38 to 0.46
Combined	2.08 (0.15)	0.04 (0.22)	0.20	0.85	−0.38 to 0.46
Community care	2.03 (0.15)
Posttreatment
Medication	1.47 (0.16)	−0.24 (0.22)	−1.11	0.27	−0.67 to 0.19
Behavioral treatment	1.36 (0.18)	−0.27 (0.23)	−1.17	0.24	−0.72 to 0.18
Combined	1.18 (0.16)	−0.65 (0.22)	−3.02	0.003	−1.08 to −0.23
Community care	1.79 (0.15)
Intercept		2.03 (0.15)	13.37	<0.001	1.74 to 2.33
Variance intercept		1.75 (0.17)			1.46 to 2.11
Variance residual		1.48 (0.10)			1.30 to 1.69

CI, confidence interval; SE, standard error.