Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2021 Mar 26;44(9):zsab075. doi: 10.1093/sleep/zsab075

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2021. Published by Oxford University Press on behalf of Sleep Research Society.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Figure 2. — Sleep schedules before and during lockdown (whole study population). (A) Shifts in bedtime and wake-up times. The gray shaded area represents 95% confidence intervals. A positive shift (+) indicates later wake-up time in comparison to the initial value in the pre-lockdown period. By using a linear mixed model, we found a significant difference in sleep schedule when comparing week and weekend (p < 0.01) but no effect of lockdown (p = 0.54). (B) Actual bedtimes (i.e. lights out time) and wake-up times.