Table 4.
Difference of study variables between the initial evaluation and during the pandemic according to the mean sleep duration (7.4 hours).
| Difference | Sleep Duration < 7.4 Hours (n = 43) | Sleep Duration ≥ 7.4 Hours (n = 51) | P |
|---|---|---|---|
| Bedtime, h | 1.0 (0.5–2.5) | 1.5 (0.5–2.3) | .279 |
| Sleep latency, min | 0 (−5 to +10) | 0 (−10 to +10) | .527 |
| Wake-up time, h | 2.2 (1.7–2.5) | 2.0 (1.5–2.3) | .042 |
| Sleep duration, h | 0.5 ± 0.2 | −0.4 ± 0.2 | <.001 |
| Social jet lag, h | −0.3 (−1.2 to +0.3) | −0.4 (−0.9 to +0.1) | .415 |
| ESS | 0 (−5 to +2) | 1 (−2 to +3) | .257 |
| PSQI | −0.3 ± 0.50 | 1.1 ± 0.4 | .021 |
| WHOQOL-BREF | |||
| Physical | −3.0 ± 12.9 | −7.5 ± 14.9 | .123 |
| Psychological | −5.4 ± 11.4 | −8.4 ± 13.7 | .263 |
| Social | −2.4 ± 24.1 | −1.7 ± 23.1 | .892 |
| Environmental | 4.2 ± 12.2 | 1.9 ± 11.0 | .351 |
| MEQ | −2.3 ± 6.0 | −3.3 ± 7.9 | .507 |
Data are presented as means ± SDs or medians (25th–75th percentile). ESS = Epworth Sleepiness Scale, MEQ = Morningness-Eveningness Questionnaire, PSQI = Pittsburgh Sleep Quality Index, SDs = standard deviations, WHOQOL-BREF = World Health Organization Quality of Life Questionnaire-abbreviated version.