. 2020 Dec 17;10:22225. doi: 10.1038/s41598-020-79299-7

Table 2.

Timings (mean ± sd, local time) of falling asleep and waking-up on workdays preSR and inSR by group, Alarm/NoAlarm and Alarm/Alarm.

	Sleep onset time	Sleep offset time
Alarm/NoAlarm	23:42 ± 1:14	0:39 ± 1:52	0:56 ± 1:29	9.58** r_g = 0.18	7:08 ± 1:09	8:49 ± 1:52	1:41 ± 1:41	15.42** r_g = 0.26
Alarm/Alarm	23:49 ± 1:10	0:23 ± 1:34	0:34 ± 1:09	7:07 ± 1:04	8:07 ± 1:34	1:00 ± 1:13

Sleep onset time

Sleep offset time

preSR

inSR

preSR

inSR

Alarm/NoAlarm

23:42 ± 1:14

0:39 ± 1:52

0:56 ± 1:29

9.58**

r_g = 0.18

7:08 ± 1:09

8:49 ± 1:52

1:41 ± 1:41

15.42**

r_g = 0.26

Alarm/Alarm

23:49 ± 1:10

0:23 ± 1:34

0:34 ± 1:09

7:07 ± 1:04

8:07 ± 1:34

1:00 ± 1:13

Changes [inSR- preSR] are designated by Δ. Mann–Whitney Z scores indicate the differences in Δ values between the groups, r_g effect size.

**p < 0.001.