Table 1.
Weekday and weekend sleep parameters assessed with wrist actigraphy in N = 16 teenagers before the COVID-19 pandemic and during the initial stay-at-home and safer-at-home phase of the pandemic in Colorado. Data are shown as mean ± SD.
| Baseline | During COVID-19 | Δ | Adjusted p value | |
|---|---|---|---|---|
| Weekday recordings | ||||
| Time of sleep onset | 00:01 ± 00:59 | 01:41 ± 01:26 | 1.66 ± 1.13 | <0.001 |
| Time of sleep offset | 06:30 ± 00:35 | 09:23 ± 01:19 | 2.88 ± 0.94 | <0.001 |
| Time of sleep midpoint | 03:16 ± 00:45 | 05:32 ± 01:18 | 2.27 ± 0.9 | <0.001 |
| Sleep duration (h) | 5.93 ± 0.41 | 6.93 ± 0.86 | 1 ± 0.87 | <0.001 |
| Sleep efficiency (%) | 87.9 ± 4.46 | 84.15 ± 3.51 | -3.75 ± 3.1 | <0.001 |
| Social jetlag (h)* | 0.92 ± 1.5 | 0.46 ± 0.89 | -0.46 ± 1.81 | 0.058 |
| Weekend recordings | ||||
| Time of sleep onset | 00:27 ± 01:08 | 02:07 ± 01:52 | 1.66 ± 1.79 | 0.01 |
| Time of sleep offset | 08:30 ± 01:12 | 09:40 ± 01:17 | 1.15 ± 1.21 | 0.01 |
| Time of sleep midpoint | 04:28 ± 00:59 | 05:53 ± 01:25 | 1.43 ± 1.38 | 0.007 |
| Sleep duration (h) | 7.25 ± 1.11 | 6.76 ± 1.36 | -0.49 ± 1.2 | 0.268 |
| Sleep efficiency (%) | 84.54 ± 4.51 | 82.33 ± 5.65 | -2.21 ± 6.12 | 0.268 |
Data are shown as mean ± standard deviation. Change represents difference in activity variables from baseline to during COVID-19 and p values correspond to paired-sample t-tests or Wilcoxon signed-rank tests (indicated by *), adjusted for multiple comparisons using the Holm–Bonferroni method.
Bold values indicate p < 0.05.