Table 3.

Analysis of differences in sleep parameters between groups in crude model vs model adjusted for current level of depression

A
	Patients vs Siblings		Patients vs Controls		Siblings vs Controls
	β	p	β	p	β	p
Sleep duration	31.75	0.003*	22.20	0.03	9.55	0.37
Sleep onset	7.34	0.49	−8.02	0.44	15.36	0.17
Sleep onset latency	0.01	1.00	−0.70	0.61	0.70	0.64
Sleep efficiency	0.48	0.59	−1.18	0.18	1.66	0.08
WASO	0.56	0.83	5.03	0.11	−4.47	0.18
Sleep offset	40.30	< 0.001*	15.15	0.16	25.15	0.03
Sleep inertia	−1.27	0.19	1.22	0.20	−2.49	0.02

B
	Patients vs Siblings		Patients vs Controls		Siblings vs Controls
	β	p	β	p	β	p
Sleep duration	10.90	0.28	0.63	0.95	10.27	0.31
Sleep onset	12.60	0.27	−2.18	0.85	14.77	0.19
Sleep onset latency	0.30	0.84	−0.37	0.81	0.67	0.66
Sleep efficiency	0.33	0.73	−1.35	0.17	1.68	0.08
WASO	−2.02	0.48	2.13	0.52	−4.15	0.20
Sleep offset	24.47	0.03	−0.23	0.98	24.70	0.03
Sleep inertia	−1.11	0.29	1.50	0.16	−2.60	0.01

Beta (β) and p-values of patients vs siblings, patients versus controls and siblings versus controls;

Table A: Random factor: relatedness; Covariates: age and gender

Table B: Random factor: relatedness; Covariates: age, gender and IDS-SR score

^*Significant at Bonferroni-corrected significance level of 0.007