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.

From: COVID-19-mandated social restrictions unveil the impact of social time pressure on sleep and body clock

 

Sleep onset time

Sleep offset time

preSR

inSR

Δ

Z

preSR

inSR

Δ

Z

Alarm/NoAlarm

23:42 ± 1:14

0:39 ± 1:52

0:56 ± 1:29

9.58**

rg = 0.18

7:08 ± 1:09

8:49 ± 1:52

1:41 ± 1:41

15.42**

rg = 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

  1. Changes [inSR- preSR] are designated by Δ. Mann–Whitney Z scores indicate the differences in Δ values between the groups, rg effect size.
  2. **p < 0.001.
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