Table 2.

Mixed model, analysis of variation of Total Sleep Time (TST) according to SCD-questionnaire classification.

			Model A Unconditional Means Model	Model B Unconditional Growth Model	Model C Interaction	Model D Interaction adjusted
Initial status	Intercept	γ00	410.97 ± 7.55	427.69 ± 13.61	444.89 ± 17.4565	316.06 ± 141.74
	SCD-questionnaire	γ01			−40.12 ± 26.66	−37.08 ± 25.96
Rate of change	Time	γ10		−19.08 ± 12.92	−42.46 ± 15.99	−46.81 ± 16.65
	Time*SCD	γ11			54.55 ± 24.42	54.40 ± 24.37
	Initial status	${\delta }_0^2$	2,091.82 ± 501.35	2,086.42 ± 498.75	2,035.46 ± 486.57	2,057.87 ± 498.43
	In rate of change	${\delta }_1^2$	6,768.73 ± 1,638.87	6,488.90 ± 1,551.14	6,094.62 ± 1,456.89	5,681.64 ± 1,437.32
	Covariance	${\delta }_1^0$	1,326.59 ± 683.61	1,365.94 ± 663.42	1,507.69 ± 647.60	1,324.84 ± 649.24
		$R_0^2$			0.024	0.019
		$R_1^2$			0.001	0.124
		AIC	778	769	762	760
		BIC	784	778	771	768