Figure 4
From: Increased sleep duration and delayed sleep timing during the COVID-19 pandemic

Self-reported time in bed and sleep timing by day of the week during the pandemic. Average time-in-bed (a) and midpoint of sleep (b) were calculated from self-reported bed (c) and wake (d) times for each day of the week in 2019 (blue) and 2020 (red). Means and SEMs are shown. Bonferroni-adjusted p values for comparisons between each day of 2019 and the corresponding day of 2020 are indicated as follows: *p < 0.05, **p < 0.01, ***p < 0.001.