Table 2.

Fixed Effects of the Mixed Effects Models for SOL Discrepancy

	Model 1		Model 2 – controlling for diary-assessed SOL		Model 3- controlled for actigraphy- assessed SOL		Model 4 – controlling for subjective sleep quality
	γ	p	γ	p	γ	p	γ	p
Intercept	16.08	.002	−16.93	<.001	29.05	<.001	39.73	<.001
Time (assessment point)	.24	.794	.20	.672	.27	.760	.31	.755
Group (BBTi vs SMAC)	19.59	.007	9.01	.034	15.88	.049	16.71	.017
Time by Group	−3.58	.006	−.90	.167	−3.58	.004	−2.79	.042
SOL-diary			.84	<.001
SOL-actigraphy					−.54	<.001
Subjective sleep quality							−8.01	<.001

Note. SOL – Sleep onset latency; BBTi – Brief behavioral therapy for insomnia. SMC – Self-monitoring control.