Table 2.

Sleep outcomes assessed each day on school days and free days during in-person, remote learning and vacation (fixed effects), with participant (n=59) as random effect. Data for other conditions are presented as relative to the mean during in-person school days (“Reference”).

	β	Lower CI	Upper CI	p
Sleep Onset Time (hh:mm)
Reference: In-person school day	22:08	21:51	22:24
In-person free day	0:35	0:23	0:46	<0.0001
Remote school day	0:26	0:17	0:34	<0.0001
Remote free day	0:59	0:49	1:08	<0.0001
Vacation	0:57	0:40	1:13	<0.0001
Wake Time (hh:mm)
Reference: In-person school day	6:50	6:39	7:02
In-person free day	1:05	0:54	1:16	<0.0001
Remote school day	0:49	0:41	0:57	<0.0001
Remote free day	1:40	1:31	1:50	<0.0001
Vacation	1:20	1:04	1:36	<0.0001
Sleep Duration (hh:mm)
Reference: In-person school day	8:42	8:29	8:55
In-person free day	0:30	0:16	0:43	0.0002
Remote school day	0:22	0:12	0:32	<0.0001
Remote free day	0:41	0:29	0:52	<0.0001
Vacation	0:23	0:04	0:43	0.18

Notes: Table shows unstandardized coefficients (β) in h:mm time, Lower and Upper 95% confidence intervals in h:mm time, and p-values, with significant values in bold. Comparisons are made to the in-person school day mean. Multiple post-hoc comparisons were run to examine differences between each fixed effect (see also Table S2). Daily sleep timing was measured using wrist-actigraphy. 1196 sleep entries were included in the model, with 5 fixed effects coefficients, and participant as a random effect. P-values indicate whether the metric is significantly different from zero.