Table A4.

Results of the LMM analyses of sleep parameters bed time (BT), get-up time (GUT), time in bed (TIM), total sleep time (TST), sleep latency (SL), fragmentation index (FI), and Groningen Sleep Quality Index (GSQI).

DV	Term	DF	F	P	R 2	Post-hoc	ICCSubject
BT	Condition	1226.4	0.09	0.766	0		0
BT	Daytype	5226.5	3549.2	<0.001 ***	0.99	D2, R1, R2 > FN, N, LN
BT	Condition × Daytype	5226.5	1.50	0.191	0.03	D2: Plac. > Treat.
GUT	Condition	1230.1	2.15	0.144	0.01		0.03
GUT	Daytype	5230.1	419.58	<0.001 ***	0.90	D2, R1, R2 < FN, N, LN FN, N > LN D2 > R2
GUT	Condition × Daytype	5230.1	1.93	0.09	0.04	R2: Treat. > Plac.
TIB	Condition	1229.7	0.033	0.857	0		0.05
TIB	Daytype	5229.4	85.49	<0.001 ***	0.66	D2, R1, R2 > FN, N, LN FN, N > LN
TIB	Condition × Daytype	5229.5	2.35	0.042 *	0.05	R2: Treat. > Plac.
TST	Condition	1229.5	0.095	0.759	0		0.05
TST	Daytype	5229.2	74.27	<0.001 ***	0.62	D2 > FN, N, LN, R2 R1, R2 > N, LN FN, N > LN
TST	Condition × Daytype	5229.3	2.65	0.024 *	0.06	R2: Treat. > Plac.
SL	Condition	1229.0	0.48	0.491	0		0.22
SL	Daytype	5228.4	3.57	0.004 **	0.07	R2 > FN, N
SL	Condition × Daytype	5228.4	2.91	0.014 *	0.06	D2: Treat. > Plac. R2: Plac. > Treat
SE	Condition	1224.4	0.022	0.882	0		0.49
SE	Daytype	5224.1	3.01	0.012 *	0.06	FN > LN, R2
SE	Condition × Daytype	5224.1	1.92	0.092	0.04	R2: Treat. > Plac.
FI	Condition	1227.9	1.35	0.246	0		0.39
FI	Daytype	1227.9	2.16	0.059	0.05	FN < R2
FI	Condition × Daytype	5227.9	2.08	0.068	0.04
GSQS	Condition	1211.4	4.65	0.032 *	0.02	Treat. > Plac.	0.31
GSQS	Daytype	5211.3	7.41	<0.001 ***	0.15	D2, FN < N, LN
GSQS	Condition × Daytype	5211.7	2.03	0.075	0.05	FN: Treat. > Plac. R1: Treat. > Plac.

Note. D2 = day before nightshift, FN = first night of nightshift, N = nightshift, LN = last night of nightshift, R1 = first recovery day, and R2 = second recovery day. * = p < 0.05; ** = p < 0.01; *** = p < 0.001.