Table 4.

Parameters estimate of the linear mixed models on the association between family members’ sleep.

	TST (minutes)		Sleep onset (hrs)		Sleep offset (hrs)		Sleep efficiency (%)
	b (SE)	p	b (SE)	p	b (SE)	p	b (SE)	p
Level 1
Sibling’s daily sleep	0.18 (0.08)	0.032	0.48 (0.07)	p < 0.001	0.25 (0.08)	0.002	0.04 (0.08)	0.647
Mother’s daily sleep	0.19 (0.11)	0.080	0.20 (0.09)	0.026	0.21 (0.12)	0.088	0.04 (0.09)	0.645
Father’s daily sleep	0.10 (0.09)	0.281	− 0.04 (0.05)	0.438	0.01 (0.07)	0.898	0.13 (0.09)	0.150
Type of night (Free night)	18.81 (9.40)	0.047	0.30 (0.10)	0.004	0.84 (0.22)	p < 0.001	0.32 (0.64)	0.621
Level 2
Adolescent’s Age	− 5.95 (2.34)	0.017	0.27 (0.05)	p < 0.001	0.12 (0.03)	0.002	0.62 (0.24)	0.015
Adolescent’s gender (Boy)	− 47.86 (15.88)	0.006	0.66 (0.33)	0.060	0.16 (0.23)	0.490	− 3.56 (1.63)	0.038

Significant values are in bold.

Hrs decimal hours, b (SE) regression estimate and standard error, TST Total Sleep Time, WASO Wake after sleep onset, SOL Sleep onset latency. Type of night is a two category variable distinguishing Work nights (nights preceding a day of work or a day of school, dummy coded as 1) and free nights (night preceding a free day, reference, dummy coded as 0). Gender was a two category variable with girl group as reference (dummy coded as 0) and boy (dummy coded as 1).